--- ObsoleteFiles.inc.orig +++ ObsoleteFiles.inc @@ -8579,8 +8579,6 @@ OLD_FILES+=usr/share/examples/etc/rc.firewall6 # 20091117: removal of rc.early(8) link OLD_FILES+=usr/share/man/man8/rc.early.8.gz -# 20091117: usr/share/zoneinfo/GMT link removed -OLD_FILES+=usr/share/zoneinfo/GMT # 20091027: pselect.3 implemented as syscall OLD_FILES+=usr/share/man/man3/pselect.3.gz # 20091005: fusword.9 and susword.9 removed --- contrib/tzdata/Makefile.orig +++ contrib/tzdata/Makefile @@ -33,7 +33,7 @@ # make zonenames # to get a list of the values you can use for LOCALTIME. -LOCALTIME= GMT +LOCALTIME= Factory # The POSIXRULES macro controls interpretation of nonstandard and obsolete # POSIX-like TZ settings like TZ='EET-2EEST' that lack DST transition rules. @@ -176,12 +176,19 @@ BACKWARD= backward -# If you want out-of-scope and often-wrong data from the file 'backzone', use +# If you want out-of-scope and often-wrong data from the file 'backzone', +# but only for entries listed in the backward-compatibility file zone.tab, use # PACKRATDATA= backzone +# PACKRATLIST= zone.tab +# If you want all the 'backzone' data, use +# PACKRATDATA= backzone +# PACKRATLIST= # To omit this data, use # PACKRATDATA= +# PACKRATLIST= PACKRATDATA= +PACKRATLIST= # The name of a locale using the UTF-8 encoding, used during self-tests. # The tests are skipped if the name does not appear to work on this system. @@ -264,7 +271,7 @@ $(GCC_INSTRUMENT) \ -Wall -Wextra \ -Walloc-size-larger-than=100000 -Warray-bounds=2 \ - -Wbad-function-cast -Wcast-align=strict -Wdate-time \ + -Wbad-function-cast -Wbidi-chars=any,ucn -Wcast-align=strict -Wdate-time \ -Wdeclaration-after-statement -Wdouble-promotion \ -Wduplicated-branches -Wduplicated-cond \ -Wformat=2 -Wformat-overflow=2 -Wformat-signedness -Wformat-truncation \ @@ -278,7 +285,7 @@ -Wsuggest-attribute=const -Wsuggest-attribute=format \ -Wsuggest-attribute=malloc \ -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure \ - -Wtrampolines -Wundef -Wuninitialized -Wunused-macros \ + -Wtrampolines -Wundef -Wuninitialized -Wunused-macros -Wuse-after-free=3 \ -Wvariadic-macros -Wvla -Wwrite-strings \ -Wno-address -Wno-format-nonliteral -Wno-sign-compare \ -Wno-type-limits -Wno-unused-parameter @@ -291,8 +298,9 @@ # guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this. # Similarly, if your system has a "zone abbreviation" field, define # -DTM_ZONE=tm_zone -# and define NO_TM_ZONE to suppress any guessing. These two fields are not -# required by POSIX, but are widely available on GNU/Linux and BSD systems. +# and define NO_TM_ZONE to suppress any guessing. Although these two fields +# not required by POSIX, a future version of POSIX is planned to require them +# and they are widely available on GNU/Linux and BSD systems. # # The next batch of options control support for external variables # exported by tzcode. In practice these variables are less useful @@ -448,6 +456,9 @@ # useful in commentary. UNUSUAL_OK_CHARSET= $(UNUSUAL_OK_LATIN_1)$(UNUSUAL_OK_IPA) +# Put this in a bracket expression to match spaces. +s = [:space:] + # OK_CHAR matches any character allowed in the distributed files. # This is the same as SAFE_CHAR, except that UNUSUAL_OK_CHARSET and # multibyte letters are also allowed so that commentary can contain a @@ -521,21 +532,23 @@ ZONETABLES= zone1970.tab zone.tab TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES) LEAP_DEPS= leapseconds.awk leap-seconds.list -TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) $(PACKRATDATA) -DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) +TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) \ + $(PACKRATDATA) $(PACKRATLIST) +DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) $(PACKRATLIST) DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \ leapseconds $(ZONETABLES) AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk \ ziguard.awk zishrink.awk -MISC= $(AWK_SCRIPTS) zoneinfo2tdf.pl +MISC= $(AWK_SCRIPTS) TZS_YEAR= 2050 TZS_CUTOFF_FLAG= -c $(TZS_YEAR) TZS= to$(TZS_YEAR).tzs TZS_NEW= to$(TZS_YEAR)new.tzs TZS_DEPS= $(YDATA) asctime.c localtime.c \ private.h tzfile.h zdump.c zic.c +TZDATA_DIST = $(COMMON) $(DATA) $(MISC) # EIGHT_YARDS is just a yard short of the whole ENCHILADA. -EIGHT_YARDS = $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC) tzdata.zi +EIGHT_YARDS = $(TZDATA_DIST) $(DOCS) $(SOURCES) tzdata.zi ENCHILADA = $(EIGHT_YARDS) $(TZS) # Consult these files when deciding whether to rebuild the 'version' file. @@ -555,7 +568,7 @@ tzfile.5 tzfile.h tzselect.8 tzselect.ksh \ workman.sh zdump.8 zdump.c zic.8 zic.c \ ziguard.awk zishrink.awk \ - zone.tab zone1970.tab zoneinfo2tdf.pl + zone.tab zone1970.tab # And for the benefit of csh users on systems that assume the user # shell should be used to handle commands in Makefiles. . . @@ -608,13 +621,17 @@ printf '%s\n' "$$V" >$@.out mv $@.out $@ -# These files can be tailored by setting BACKWARD and PACKRATDATA. +# These files can be tailored by setting BACKWARD, PACKRATDATA, PACKRATLIST. vanguard.zi main.zi rearguard.zi: $(DSTDATA_ZI_DEPS) - $(AWK) -v DATAFORM=`expr $@ : '\(.*\).zi'` -f ziguard.awk \ + $(AWK) \ + -v DATAFORM=`expr $@ : '\(.*\).zi'` \ + -v PACKRATDATA='$(PACKRATDATA)' \ + -v PACKRATLIST='$(PACKRATLIST)' \ + -f ziguard.awk \ $(TDATA) $(PACKRATDATA) >$@.out mv $@.out $@ # This file has a version comment that attempts to capture any tailoring -# via BACKWARD, DATAFORM, PACKRATDATA, and REDO. +# via BACKWARD, DATAFORM, PACKRATDATA, PACKRATLIST, and REDO. tzdata.zi: $(DATAFORM).zi version zishrink.awk version=`sed 1q version` && \ LC_ALL=C $(AWK) \ @@ -652,6 +669,7 @@ DESTDIR='$(DESTDIR)' \ LEAPSECONDS='$(LEAPSECONDS)' \ PACKRATDATA='$(PACKRATDATA)' \ + PACKRATLIST='$(PACKRATLIST)' \ TZDEFAULT='$(TZDEFAULT)' \ TZDIR='$(TZDIR)' \ ZIC='$(ZIC)' @@ -690,11 +708,6 @@ $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-posix' posix_only $(MAKE) $(INSTALLARGS) TZDIR='$(TZDIR)-leaps' right_only -# This obsolescent rule is present for backwards compatibility with -# tz releases 2014g through 2015g. It should go away eventually. -posix_packrat: $(INSTALL_DATA_DEPS) - $(MAKE) $(INSTALLARGS) PACKRATDATA=backzone posix_only - zones: $(REDO) # dummy.zd is not a real file; it is mentioned here only so that the @@ -755,8 +768,8 @@ mv $@.out $@ check: check_character_set check_white_space check_links \ - check_name_lengths check_sorted \ - check_tables check_web check_zishrink check_tzs + check_name_lengths check_slashed_abbrs check_sorted \ + check_tables check_web check_ziguard check_zishrink check_tzs check_character_set: $(ENCHILADA) test ! '$(UTF8_LOCALE)' || \ @@ -780,19 +793,28 @@ patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \ ! grep -En "$$pat" \ $$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list) - ! grep -n '[[:space:]]$$' \ + ! grep -n '[$s]$$' \ $$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list) touch $@ -PRECEDES_FILE_NAME = ^(Zone|Link[[:space:]]+[^[:space:]]+)[[:space:]]+ -FILE_NAME_COMPONENT_TOO_LONG = \ - $(PRECEDES_FILE_NAME)[^[:space:]]*[^/[:space:]]{15} +PRECEDES_FILE_NAME = ^(Zone|Link[$s]+[^$s]+)[$s]+ +FILE_NAME_COMPONENT_TOO_LONG = $(PRECEDES_FILE_NAME)[^$s]*[^/$s]{15} check_name_lengths: $(TDATA_TO_CHECK) backzone ! grep -En '$(FILE_NAME_COMPONENT_TOO_LONG)' \ $(TDATA_TO_CHECK) backzone touch $@ +PRECEDES_STDOFF = ^(Zone[$s]+[^$s]+)?[$s]+ +STDOFF = [-+]?[0-9:.]+ +RULELESS_SAVE = (-|$(STDOFF)[sd]?) +RULELESS_SLASHED_ABBRS = \ + $(PRECEDES_STDOFF)$(STDOFF)[$s]+$(RULELESS_SAVE)[$s]+[^$s]*/ + +check_slashed_abbrs: $(TDATA_TO_CHECK) + ! grep -En '$(RULELESS_SLASHED_ABBRS)' $(TDATA_TO_CHECK) + touch $@ + CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; } check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab @@ -832,11 +854,19 @@ test ! -s $@.out || { cat $@.out; exit 1; } mv $@.out $@ +check_ziguard: rearguard.zi vanguard.zi ziguard.awk + $(AWK) -v DATAFORM=rearguard -f ziguard.awk vanguard.zi | \ + diff -u rearguard.zi - + $(AWK) -v DATAFORM=vanguard -f ziguard.awk rearguard.zi | \ + diff -u vanguard.zi - + touch $@ + # Check that zishrink.awk does not alter the data, and that ziguard.awk # preserves main-format data. check_zishrink: check_zishrink_posix check_zishrink_right check_zishrink_posix check_zishrink_right: \ - zic leapseconds $(PACKRATDATA) $(TDATA) $(DATAFORM).zi tzdata.zi + zic leapseconds $(PACKRATDATA) $(PACKRATLIST) \ + $(TDATA) $(DATAFORM).zi tzdata.zi rm -fr $@.dir $@-t.dir $@-shrunk.dir mkdir $@.dir $@-t.dir $@-shrunk.dir case $@ in \ @@ -845,8 +875,8 @@ esac && \ $(ZIC) $$leap -d $@.dir $(DATAFORM).zi && \ $(ZIC) $$leap -d $@-shrunk.dir tzdata.zi && \ - case $(DATAFORM) in \ - main) \ + case $(DATAFORM),$(PACKRATLIST) in \ + main,) \ $(ZIC) $$leap -d $@-t.dir $(TDATA) && \ $(AWK) '/^Rule/' $(TDATA) | \ $(ZIC) $$leap -d $@-t.dir - $(PACKRATDATA) && \ @@ -967,6 +997,10 @@ rm public.dir/main.zi cd public.dir && $(MAKE) PACKRATDATA=backzone main.zi public.dir/zic -d public.dir/zoneinfo main.zi + rm public.dir/main.zi + cd public.dir && \ + $(MAKE) PACKRATDATA=backzone PACKRATLIST=zone.tab main.zi + public.dir/zic -d public.dir/zoneinfo main.zi : rm -fr public.dir touch $@ @@ -1027,9 +1061,9 @@ ALL_ASC = $(TRADITIONAL_ASC) $(REARGUARD_ASC) \ tzdb-$(VERSION).tar.lz.asc -tarballs rearguard_tarballs traditional_tarballs \ +tarballs rearguard_tarballs tailored_tarballs traditional_tarballs \ signatures rearguard_signatures traditional_signatures: \ - version set-timestamps.out rearguard.zi + version set-timestamps.out rearguard.zi vanguard.zi VERSION=`cat version` && \ $(MAKE) AWK='$(AWK)' VERSION="$$VERSION" $@_version @@ -1042,6 +1076,8 @@ tzdata$(VERSION)-rearguard.tar.gz traditional_tarballs_version: \ tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz +tailored_tarballs_version: \ + tzdata$(VERSION)-tailored.tar.gz signatures_version: $(ALL_ASC) rearguard_signatures_version: $(REARGUARD_ASC) traditional_signatures_version: $(TRADITIONAL_ASC) @@ -1055,34 +1091,76 @@ tzdata$(VERSION).tar.gz: set-timestamps.out LC_ALL=C && export LC_ALL && \ - tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \ + tar $(TARFLAGS) -cf - $(TZDATA_DIST) | \ gzip $(GZIPFLAGS) >$@.out mv $@.out $@ +# Create empty files with a reproducible timestamp. +CREATE_EMPTY = TZ=UTC0 touch -mt 202010122253.00 + +# The obsolescent *rearguard* targets and related macros are present +# for backwards compatibility with tz releases 2018e through 2022a. +# They should go away eventually. To build rearguard tarballs you +# can instead use 'make DATAFORM=rearguard tailored_tarballs'. tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out - rm -fr tzdata$(VERSION)-rearguard.dir - mkdir tzdata$(VERSION)-rearguard.dir - ln $(COMMON) $(DATA) $(MISC) tzdata$(VERSION)-rearguard.dir - cd tzdata$(VERSION)-rearguard.dir && \ - rm -f $(TDATA) $(PACKRATDATA) version + rm -fr $@.dir + mkdir $@.dir + ln $(TZDATA_DIST) $@.dir + cd $@.dir && rm -f $(TDATA) $(PACKRATDATA) version for f in $(TDATA) $(PACKRATDATA); do \ - rearf=tzdata$(VERSION)-rearguard.dir/$$f; \ + rearf=$@.dir/$$f; \ $(AWK) -v DATAFORM=rearguard -f ziguard.awk $$f >$$rearf && \ $(SET_TIMESTAMP_DEP) $$rearf ziguard.awk $$f || exit; \ done - sed '1s/$$/-rearguard/' \ - tzdata$(VERSION)-rearguard.dir/version + sed '1s/$$/-rearguard/' $@.dir/version : The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier. - TZ=UTC0 touch -mt 202010122253.00 \ - tzdata$(VERSION)-rearguard.dir/pacificnew - touch -cmr version tzdata$(VERSION)-rearguard.dir/version + $(CREATE_EMPTY) $@.dir/pacificnew + touch -cmr version $@.dir/version LC_ALL=C && export LC_ALL && \ - (cd tzdata$(VERSION)-rearguard.dir && \ + (cd $@.dir && \ tar $(TARFLAGS) -cf - \ - $(COMMON) $(DATA) $(MISC) pacificnew | \ + $(TZDATA_DIST) pacificnew | \ gzip $(GZIPFLAGS)) >$@.out mv $@.out $@ +# Create a tailored tarball suitable for TZUpdater and compatible tools. +# For example, 'make DATAFORM=vanguard tailored_tarballs' makes a tarball +# useful for testing whether TZUpdater supports vanguard form. +# The generated tarball is not byte-for-byte equivalent to a hand-tailored +# traditional tarball, as data entries are put into 'etcetera' even if they +# came from some other source file. However, the effect should be the same +# for ordinary use, which reads all the source files. +tzdata$(VERSION)-tailored.tar.gz: set-timestamps.out + rm -fr $@.dir + mkdir $@.dir + : The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier. + cd $@.dir && \ + $(CREATE_EMPTY) $(PRIMARY_YDATA) $(NDATA) backward \ + `test $(DATAFORM) = vanguard || echo pacificnew` + (grep '^#' tzdata.zi && echo && cat $(DATAFORM).zi) \ + >$@.dir/etcetera + touch -cmr tzdata.zi $@.dir/etcetera + sed -n \ + -e '/^# *version *\(.*\)/h' \ + -e '/^# *ddeps */H' \ + -e '$$!d' \ + -e 'g' \ + -e 's/^# *version *//' \ + -e 's/\n# *ddeps */-/' \ + -e 's/ /-/g' \ + -e 'p' \ + $@.dir/version + touch -cmr version $@.dir/version + links= && \ + for file in $(TZDATA_DIST); do \ + test -f $@.dir/$$file || links="$$links $$file"; \ + done && \ + ln $$links $@.dir + LC_ALL=C && export LC_ALL && \ + (cd $@.dir && \ + tar $(TARFLAGS) -cf - * | gzip $(GZIPFLAGS)) >$@.out + mv $@.out $@ + tzdb-$(VERSION).tar.lz: set-timestamps.out set-tzs-timestamp.out rm -fr tzdb-$(VERSION) mkdir tzdb-$(VERSION) @@ -1134,13 +1212,14 @@ .PHONY: check_web check_zishrink .PHONY: clean clean_misc dummy.zd force_tzs .PHONY: install install_data maintainer-clean names -.PHONY: posix_only posix_packrat posix_right public +.PHONY: posix_only posix_right public .PHONY: rearguard_signatures rearguard_signatures_version .PHONY: rearguard_tarballs rearguard_tarballs_version .PHONY: right_only right_posix signatures signatures_version .PHONY: tarballs tarballs_version .PHONY: traditional_signatures traditional_signatures_version .PHONY: traditional_tarballs traditional_tarballs_version +.PHONY: tailored_tarballs tailored_tarballs_version .PHONY: typecheck .PHONY: zonenames zones .PHONY: $(ZDS) --- contrib/tzdata/NEWS.orig +++ contrib/tzdata/NEWS @@ -1,5 +1,140 @@ News for the tz database +Release 2022c - 2022-08-15 17:47:18 -0700 + + Briefly: + Work around awk bug in FreeBSD, macOS, etc. + Improve tzselect on intercontinental Zones. + + Changes to code + + Work around a bug in onetrueawk that broke commands like + 'make traditional_tarballs' on FreeBSD, macOS, etc. + (Problem reported by Deborah Goldsmith.) + + Add code to tzselect that uses experimental structured comments in + zone1970.tab to clarify whether Zones like Africa/Abidjan and + Europe/Istanbul cross continent or ocean boundaries. + (Inspired by a problem reported by Peter Krefting.) + + Fix bug with 'zic -d /a/b/c' when /a is unwritable but the + directory /a/b already exists. + + Remove zoneinfo2tdf.pl, as it was unused and triggered false + malware alarms on some email servers. + + +Release 2022b - 2022-08-10 15:38:32 -0700 + + Briefly: + Chile's DST is delayed by a week in September 2022. + Iran no longer observes DST after 2022. + Rename Europe/Kiev to Europe/Kyiv. + New zic -R option + Vanguard form now uses %z. + Finish moving duplicate-since-1970 zones to 'backzone'. + New build option PACKRATLIST + New tailored_tarballs target, replacing rearguard_tarballs + + Changes to future timestamps + + Chile's 2022 DST start is delayed from September 4 to September 11. + (Thanks to Juan Correa.) + + Iran plans to stop observing DST permanently, after it falls back + on 2022-09-21. (Thanks to Ali Mirjamali.) + + Changes to past timestamps + + Finish moving to 'backzone' the location-based zones whose + timestamps since 1970 are duplicates; adjust links accordingly. + This change ordinarily affects only pre-1970 timestamps, and with + the new PACKRATLIST option it does not affect any timestamps. + In this round the affected zones are Antarctica/Vostok, + Asia/Brunei, Asia/Kuala_Lumpur, Atlantic/Reykjavik, + Europe/Amsterdam, Europe/Copenhagen, Europe/Luxembourg, + Europe/Monaco, Europe/Oslo, Europe/Stockholm, Indian/Christmas, + Indian/Cocos, Indian/Kerguelen, Indian/Mahe, Indian/Reunion, + Pacific/Chuuk, Pacific/Funafuti, Pacific/Majuro, Pacific/Pohnpei, + Pacific/Wake and Pacific/Wallis, and the affected links are + Arctic/Longyearbyen, Atlantic/Jan_Mayen, Iceland, Pacific/Ponape, + Pacific/Truk, and Pacific/Yap. + + From fall 1994 through fall 1995, Shanks wrote that Crimea's + DST transitions were at 02:00 standard time, not at 00:00. + (Thanks to Michael Deckers.) + + Iran adopted standard time in 1935, not 1946. In 1977 it observed + DST from 03-21 23:00 to 10-20 24:00; its 1978 transitions were on + 03-24 and 08-05, not 03-20 and 10-20; and its spring 1979 + transition was on 05-27, not 03-21. + (Thanks to Roozbeh Pournader and Francis Santoni.) + + Chile's observance of -04 from 1946-08-29 through 1947-03-31 was + considered DST, not standard time. Santiago and environs had moved + their clocks back to rejoin the rest of mainland Chile; put this + change at the end of 1946-08-28. (Thanks to Michael Deckers.) + + Some old, small clock transitions have been removed, as people at + the time did not change their clocks. This affects Asia/Hong_Kong + in 1904, Asia/Ho_Chi_Minh in 1906, and Europe/Dublin in 1880. + + Changes to zone name + + Rename Europe/Kiev to Europe/Kyiv, as "Kyiv" is more common in + English now. Spelling of other names in Ukraine has not yet + demonstrably changed in common English practice so for now these + names retain old spellings, as in other countries (e.g., + Europe/Prague not "Praha", and Europe/Sofia not "Sofiya"). + + Changes to code + + zic has a new option '-R @N' to output explicit transitions < N. + (Need suggested by Almaz Mingaleev.) + + 'zic -r @N' no longer outputs bad data when N < first transition. + (Problem introduced in 2021d and reported by Peter Krefting.) + + zic now checks its input for NUL bytes and unterminated lines, and + now supports input line lengths up to 2048 (not 512) bytes. + + gmtime and related code now use the abbreviation "UTC" not "GMT". + POSIX is being revised to require this. + + When tzset and related functions set vestigial static variables + like tzname, they now prefer specified timestamps to unspecified ones. + (Problem reported by Almaz Mingaleev.) + + zic no longer complains "can't determine time zone abbreviation to + use just after until time" when a transition to a new standard + time occurs simultaneously with the first DST fallback transition. + + Changes to build procedure + + Source data in vanguard form now uses the %z notation, introduced + in release 2015f. For example, for America/Sao_Paulo vanguard + form contains the zone continuation line "-3:00 Brazil %z", which + is simpler and more reliable than the line "-3:00 Brazil -03/-02" + used in main and rearguard forms. The plan is for the main form + to use %z eventually; in the meantime maintainers of zi parsers + are encouraged to test the parsers on vanguard.zi. + + The Makefile has a new PACKRATLIST option to select a subset of + 'backzone'. For example, 'make PACKRATDATA=backzone + PACKRATLIST=zone.tab' now generates TZif files identical to those + of the global-tz project. + + The Makefile has a new tailored_tarballs target for generating + special-purpose tarballs. It generalizes and replaces the + rearguard_tarballs target and related targets and macros, which + are now obsolescent. + + 'make install' now defaults LOCALTIME to Factory not GMT, + which means the default abbreviation is now "-00" not "GMT". + + Remove the posix_packrat target, marked obsolescent in 2016a. + + Release 2022a - 2022-03-15 23:02:01 -0700 Briefly: @@ -161,7 +296,7 @@ Rename Pacific/Enderbury to Pacific/Kanton. When we added Enderbury in 1993, we did not know that it is uninhabited and that Kanton (population two dozen) is the only inhabited location in - that timezone. The old name is now a backward-compatility link. + that timezone. The old name is now a backward-compatibility link. Changes to past timestamps @@ -1315,7 +1450,7 @@ Changes to build procedure The distribution now contains the file 'pacificnew' again. - This file was inadvertantly omitted in the 2018a distribution. + This file was inadvertently omitted in the 2018a distribution. (Problem reported by Matias Fonzo.) @@ -4387,7 +4522,7 @@ changes by Paul Eggert - Derick Rethan's Asmara change + Derick Rethans's Asmara change Oscar van Vlijmen's Easter Island local mean time change --- contrib/tzdata/africa.orig +++ contrib/tzdata/africa @@ -159,6 +159,7 @@ Link Africa/Abidjan Africa/Lome # Togo Link Africa/Abidjan Africa/Nouakchott # Mauritania Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso +Link Africa/Abidjan Atlantic/Reykjavik # Iceland Link Africa/Abidjan Atlantic/St_Helena # St Helena # Djibouti @@ -169,7 +170,7 @@ # Egypt # Milne says Cairo used 2:05:08.9, the local mean time of the Abbasizeh -# observatory; round to nearest. Milne also says that the official time for +# observatory. Milne also says that the official time for # Egypt was mean noon at the Great Pyramid, 2:04:30.5, but apparently this # did not apply to Cairo, Alexandria, or Port Said. @@ -354,6 +355,7 @@ Rule Egypt 2014 only - Sep lastThu 24:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF 2:05:08.9 Zone Africa/Cairo 2:05:09 - LMT 1900 Oct 2:00 Egypt EE%sT @@ -407,7 +409,7 @@ # At midnight on 30 June 1928 the clocks throughout Kenya was put forward # half an hour by the Alteration of Time Ordinance, 1928. # https://gazettes.africa/archive/ke/1928/ke-government-gazette-dated-1928-05-11-no-28.pdf -# [Ordinance No. 11 of 1928, The Offical Gazette, 1928-06-26, p 813] +# [Ordinance No. 11 of 1928, The Official Gazette, 1928-06-26, p 813] # https://books.google.com/books?id=2S0S6os32ZUC&pg=PA813 # # The 1928 ordinance was repealed by the Alteration of Time (repeal) Ordinance, @@ -1310,21 +1312,9 @@ Link Africa/Lagos Africa/Porto-Novo # Benin # Réunion -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis - 4:00 - +04 -# -# Scattered Islands (Îles Éparses) administered from Réunion are as follows. -# The following information about them is taken from -# Îles Éparses (, 1997-07-22, -# in French; no longer available as of 1999-08-17). -# We have no info about their time zone histories. +# See Asia/Dubai. # -# Bassas da India - uninhabited -# Europa Island - inhabited from 1905 to 1910 by two families -# Glorioso Is - inhabited until at least 1958 -# Juan de Nova - uninhabited -# Tromelin - inhabited until at least 1958 +# The Crozet Islands also observe Réunion time; see the 'antarctica' file. # Rwanda # See Africa/Maputo. @@ -1356,9 +1346,10 @@ # From Michael Deckers (2018-12-30): # https://www.legis-palop.org/download.jsp?idFile=102818 # ... [The legal time of the country, which coincides with universal -# coordinated time, will be restituted at 2 o'clock on day 1 of January, 2019.] +# coordinated time, will be reinstituted at 2 o'clock on day 1 of January, 2019.] Zone Africa/Sao_Tome 0:26:56 - LMT 1884 + #STDOFF -0:36:44.68 -0:36:45 - LMT 1912 Jan 1 00:00u # Lisbon MT 0:00 - GMT 2018 Jan 1 01:00 1:00 - WAT 2019 Jan 1 02:00 @@ -1368,28 +1359,7 @@ # See Africa/Abidjan. # Seychelles - -# From P Chan (2020-11-27): -# Standard Time was adopted on 1907-01-01. -# -# Standard Time Ordinance (Chapter 237) -# The Laws of Seychelles in Force on the 31st December, 1971, Vol. 6, p 571 -# https://books.google.com/books?id=efE-AQAAIAAJ&pg=PA571 -# -# From Tim Parenti (2020-12-05): -# A footnote on https://books.google.com/books?id=DYdDAQAAMAAJ&pg=PA1689 -# confirms that Ordinance No. 9 of 1906 "was brought into force on the 1st -# January, 1907." - -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Mahe 3:41:48 - LMT 1907 Jan 1 # Victoria - 4:00 - +04 -# From Paul Eggert (2001-05-30): -# Aldabra, Farquhar, and Desroches, originally dependencies of the -# Seychelles, were transferred to the British Indian Ocean Territory -# in 1965 and returned to Seychelles control in 1976. We don't know -# whether this affected their time zone, so omit this for now. -# Possibly the islands were uninhabited. +# See Asia/Dubai. # Sierra Leone # See Africa/Abidjan. --- contrib/tzdata/antarctica.orig +++ contrib/tzdata/antarctica @@ -157,9 +157,7 @@ # St Paul Island - near Amsterdam, uninhabited # fishing stations operated variously 1819/1931 # -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français - 5:00 - +05 +# Kerguelen - see Indian/Maldives. # # year-round base in the main continent # Dumont d'Urville - see Pacific/Port_Moresby. @@ -242,31 +240,7 @@ # year-round from 1960/61 to 1992 # Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11 -# From Craig Mundell (1994-12-15): -# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP -# Vostok, which is one of the Russian stations, is set on the same -# time as Moscow, Russia. -# -# From Lee Hotz (2001-03-08): -# I queried the folks at Columbia who spent the summer at Vostok and this is -# what they had to say about time there: -# "in the US Camp (East Camp) we have been on New Zealand (McMurdo) -# time, which is 12 hours ahead of GMT. The Russian Station Vostok was -# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead -# of GMT). This is a time zone I think two hours east of Moscow. The -# natural time zone is in between the two: 8 hours ahead of GMT." -# -# From Paul Eggert (2001-05-04): -# This seems to be hopelessly confusing, so I asked Lee Hotz about it -# in person. He said that some Antarctic locations set their local -# time so that noon is the warmest part of the day, and that this -# changes during the year and does not necessarily correspond to mean -# solar noon. So the Vostok time might have been whatever the clocks -# happened to be during their visit. So we still don't really know what time -# it is at Vostok. But we'll guess +06. -# -Zone Antarctica/Vostok 0 - -00 1957 Dec 16 - 6:00 - +06 +# See Asia/Urumqi. # S Africa - year-round bases # Marion Island, -4653+03752 --- contrib/tzdata/asia.orig +++ contrib/tzdata/asia @@ -255,10 +255,7 @@ 6:00 - +06 # Brunei -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan - 7:30 - +0730 1933 - 8:00 - +08 +# See Asia/Kuching. # Burma / Myanmar @@ -276,6 +273,7 @@ 6:30 - +0630 1942 May 9:00 - +09 1945 May 3 6:30 - +0630 +Link Asia/Yangon Indian/Cocos # Cambodia # See Asia/Bangkok. @@ -344,12 +342,9 @@ # in the city at the time for people who use different time standard to adjust # their clock to their preferred time. # -# a. For the 1940 May 31 spring forward, the essay claim that it was -# coordinared between the international settlement authority and the French -# concession authority and have gathered support from Hong Kong and Xiamen, -# that it would spring forward an hour from May 31 "midnight", and the essay -# claim "Hong Kong government implemented the spring forward in the same time -# on the same date as Shanghai". +# a. For the 1940 May 31 spring forward, the essay [says] ... "Hong +# Kong government implemented the spring forward in the same time on +# the same date as Shanghai". # # b. For the 1940 fall back, it was said that they initially intended to do # so on September 30 00:59 at night, however they postponed it to October 12 @@ -545,7 +540,7 @@ # Zhongyuan Time ("Central plain Time") UT +08 # Now part of Asia/Shanghai. # most of China -# Milne gives 8:05:43.2 for Xujiahui Observatory time; round to nearest. +# Milne gives 8:05:43.2 for Xujiahui Observatory time.... # Guo says Shanghai switched to UT +08 "from the end of the 19th century". # # Long-shu Time (probably as Long and Shu were two names of the area) UT +07 @@ -664,6 +659,7 @@ # Zone NAME STDOFF RULES FORMAT [UNTIL] # Beijing time, used throughout China; represented by Shanghai. + #STDOFF 8:05:43.2 Zone Asia/Shanghai 8:05:43 - LMT 1901 8:00 Shang C%sT 1949 May 28 8:00 PRC C%sT @@ -671,11 +667,12 @@ # / Wulumuqi. (Please use Asia/Shanghai if you prefer Beijing time.) Zone Asia/Urumqi 5:50:20 - LMT 1928 6:00 - +06 +Link Asia/Urumqi Antarctica/Vostok # Hong Kong -# Milne gives 7:36:41.7; round this. +# Milne gives 7:36:41.7. # From Lee Yiu Chung (2009-10-24): # I found there are some mistakes for the...DST rule for Hong @@ -859,7 +856,8 @@ Rule HK 1979 only - May 13 3:30 1:00 S Rule HK 1979 only - Oct 21 3:30 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 + #STDOFF 7:36:41.7 +Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 29 17:00u 8:00 - HKT 1941 Jun 15 3:00 8:00 1:00 HKST 1941 Oct 1 4:00 8:00 0:30 HKWT 1941 Dec 25 @@ -1334,7 +1332,7 @@ # # From Paul Eggert (2014-09-06): # The 1876 Report of the Secretary of the [US] Navy, p 306 says that Batavia -# civil time was 7:07:12.5; round to even for Jakarta. +# civil time was 7:07:12.5. # # From Gwillim Law (2001-05-28), overriding Shanks & Pottenger: # http://www.sumatera-inc.com/go_to_invest/about_indonesia.asp#standtime @@ -1370,10 +1368,11 @@ # # Zone NAME STDOFF RULES FORMAT [UNTIL] # Java, Sumatra + #STDOFF 7:07:12.5 Zone Asia/Jakarta 7:07:12 - LMT 1867 Aug 10 # Shanks & Pottenger say the next transition was at 1924 Jan 1 0:13, # but this must be a typo. - 7:07:12 - BMT 1923 Dec 31 23:47:12 # Batavia + 7:07:12 - BMT 1923 Dec 31 16:40u # Batavia 7:20 - +0720 1932 Nov 7:30 - +0730 1942 Mar 23 9:00 - +09 1945 Sep 23 @@ -1405,6 +1404,111 @@ # Iran +# From Roozbeh Pournader (2022-05-30): +# Here's an order from the Cabinet to the rest of the government to switch to +# Tehran time, which is mentioned to be already at +03:30: +# https://qavanin.ir/Law/TreeText/180138 +# Just in case that goes away, I also saved a copy at archive.org: +# https://web.archive.org/web/20220530111940/https://qavanin.ir/Law/TreeText/180138 +# Here's my translation: +# +# "Circular on Matching the Hours of Governmental and Official Circles +# in Provinces +# Approved 1314/03/22 [=1935-06-13] +# According to the ruling of the Honorable Cabinet, it is ordered that from +# now on in all internal provinces of the country, governmental and official +# circles set their time to match Tehran time (three hours and half before +# Greenwich).... +# +# I still haven't found out when Tehran itself switched to +03:30.... +# +# From Paul Eggert (2022-06-05): +# Although the above says Tehran was at +03:30 before 1935-06-13, we don't +# know when it switched to +03:30. For now, use 1935-06-13 as the switch date. +# Although most likely wrong, we have no better info. + +# From Roozbeh Pournader (2022-06-01): +# This is from Kayhan newspaper, one of the major Iranian newspapers, from +# March 20, 1978, page 2: +# +# "Pull the clocks 60 minutes forward +# As we informed before, from the fourth day of the month Farvardin of the +# new year [=1978-03-24], clocks will be pulled forward, and people's daily +# work and life program will start one hour earlier than the current program. +# On the 1st day of the month Farvardin of this year [=1977-03-21], they had +# pulled the clocks forward by one hour, but in the month of Mehr +# [=1977-09-23], the clocks were pulled back by 30 minutes. +# In this way, from the 4th day of the month Farvardin, clocks will be ahead +# of the previous years by one hour and a half. +# According to the new program, during the night of 4th of Farvardin, when +# the midnight, meaning 24 o'clock is announced, the hands of the clock must +# be pulled forward by one hour and thus consider midnight 1 o'clock in the +# forenoon." +# +# This implies that in September 1977, when the daylight savings time was +# done with, Iran didn't go back to +03:30, but immediately to +04:00. +# +# +# This is from the major Iranian newspaper Ettela'at, dated [1978-08-03]..., +# page 32. It looks like they decided to get the clocks back to +4:00 +# just in time for Ramadan that year: +# +# "Tomorrow Night, Pull the Clocks Back by One Hour +# At 1 o'clock in the forenoon of Saturday 14 Mordad [=1978-08-05], the +# clocks will be pulled one hour back and instead of 1 o'clock in the +# forenoon, Radio Iran will announce 24 o'clock. +# This decision was made in the Cabinet of Ministers meeting of 25 Tir +# [=1978-07-16], [...] +# At the beginning of the year 2537 [=March 1978: Iran was using a different +# year number for a few years then, based on the Coronation of Cyrus the +# Great], the country's official time was pulled forward by one hour and now +# the official time is one hour and a half ahead compared to last year, +# because in Farvardin of last year [=March 1977], the official time was +# pulled forward one hour and this continued until the second half of last +# year [=September 1977] until in the second half of last year the official +# time was pulled back half an hour and that half hour still remains." +# +# This matches the time of the true noon published in the newspapers, as they +# clearly go from +05:00 to +04:00 after that date (which happened during a +# long weekend in Iran). + +# From Roozbeh Pournader (2022-05-31): +# [Movahedi S. Cultural preconceptions of time: Can we use operational time +# to meddle in God's Time? Comp Stud Soc Hist. 1985;27(3):385-400] +# https://www.jstor.org/stable/178704 +# Here's the quotes from the paper: +# 1. '"Iran's official time keeper moved the clock one hour forward as from +# March 22, 1977 (Farvardin 2, 2536) to make maximum use of daylight and save +# in energy consumption. Thus Iran joined such other countries as Britain in +# observing what is known as 'daylight saving.' The proposal was originally +# put forward by the Ministry of Energy, in no way having any influence on +# observing religious ceremonies. Moving time one hour forward in summer +# means that at 11:00 o'clock on March 21, the official time was set as +# midnight March 22. Then September 24 will actually begin one hour later +# than the end of September 23 [...]." Iran's time base thus continued to be +# Greenwich Mean Time plus three and one-half hours (plus four and one-half +# hours in summer).' +# +# The article sources this from Iran Almanac and Book of Facts, 1977, Tehran: +# Echo of Iran, which is on Google Books at +# https://www.google.com/books/edition/Iran_Almanac_and_Book_of_Facts/9ybVAAAAMAAJ. +# (I confirmed it by searching for snippets.) +# +# 2. "After the fall of the shah, the revolutionary government returned to +# daylight-saving time (DST) on 26 May 1979." +# +# This seems to have been announced just one day in advance, on 25 May 1979. +# +# The change in 1977 clearly seems to be the first daylight savings effort in +# Iran. But the article doesn't mention what happened in 1978 (which was +# still during the shah's government), or how things continued in 1979 +# onwards (which was during the Islamic Republic). + +# From Francis Santoni (2022-06-01): +# for Iran and 1977 the effective change is only 20 October +# (UIT No. 143 17.XI.1977) and not 23 September (UIT No. 141 13.IX.1977). +# UIT is the Operational Bulletin of International Telecommunication Union. + # From Roozbeh Pournader (2003-03-15): # This is an English translation of what I just found (originally in Persian). # The Gregorian dates in brackets are mine: @@ -1439,65 +1543,12 @@ # leap year calculation involved. There has never been any serious # plan to change that law.... # -# From Paul Eggert (2018-11-30): -# Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter. -# I used the following code in GNU Emacs 26.1 to generate the "Rule Iran" -# lines from 2008 through 2087. Emacs 26.1 uses Ed Reingold's -# cal-persia implementation of Birashk's approximation, which in the -# 2008-2087 range disagrees with the astronomical Persian calendar -# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), so -# the following code special-cases those years. See Table 15.1, page 264, of: -# Edward M. Reingold and Nachum Dershowitz, Calendrical Calculations: -# The Ultimate Edition, Cambridge University Press (2018). -# https://www.cambridge.org/fr/academic/subjects/computer-science/computing-general-interest/calendrical-calculations-ultimate-edition-4th-edition -# Page 258, footnote 2, of this book says there is some dispute over what will -# happen in 2091 (and some other years after that), so this code -# stops in 2087, as 2088 and 2089 agree with the "max" rule below. -# (cl-loop -# initially (require 'cal-persia) -# with first-persian-year = 1387 -# with last-persian-year = 1466 -# ;; Exceptional years in the above range, -# ;; from Reingold & Dershowitz Table 15.1, page 264: -# with exceptional-persian-years = '(1404 1437) -# with range-start = nil -# for persian-year from first-persian-year to last-persian-year -# do -# (let* -# ((exceptional-year-offset -# (if (member persian-year exceptional-persian-years) 1 0)) -# (beg-dst-absolute -# (+ (calendar-persian-to-absolute (list 1 1 persian-year)) -# exceptional-year-offset)) -# (end-dst-absolute -# (+ (calendar-persian-to-absolute (list 6 30 persian-year)) -# exceptional-year-offset)) -# (next-year-beg-dst-absolute -# (+ (calendar-persian-to-absolute (list 1 1 (1+ persian-year))) -# (if (member (1+ persian-year) exceptional-persian-years) 1 0))) -# (beg-dst (calendar-gregorian-from-absolute beg-dst-absolute)) -# (end-dst (calendar-gregorian-from-absolute end-dst-absolute)) -# (next-year-beg-dst (calendar-gregorian-from-absolute -# next-year-beg-dst-absolute)) -# (year (calendar-extract-year beg-dst)) -# (range-end (if range-start year "only"))) -# (setq range-start (or range-start year)) -# (when (or (/= (calendar-extract-day beg-dst) -# (calendar-extract-day next-year-beg-dst)) -# (= persian-year last-persian-year)) -# (insert -# (format -# "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t1:00\t-\n" -# range-start range-end -# (calendar-month-name (calendar-extract-month beg-dst) t) -# (calendar-extract-day beg-dst))) -# (insert -# (format -# "Rule\tIran\t%d\t%s\t-\t%s\t%2d\t24:00\t0\t-\n" -# range-start range-end -# (calendar-month-name (calendar-extract-month end-dst) t) -# (calendar-extract-day end-dst))) -# (setq range-start nil)))) +# From Paul Eggert (2022-06-30): +# Go with Pournader for 1935 through spring 1979, and for timestamps +# after August 1991; go with with Shanks & Pottenger for other timestamps. +# Go with Santoni's citation of the UIT for fall 1977, as 20 October 1977 +# is 28 Mehr 1356, consistent with the "Mehr" in Pournader's source. +# Assume that the UIT's "1930" is UTC, i.e., 24:00 local time. # # From Oscar van Vlijmen (2005-03-30), writing about future # discrepancies between cal-persia and the Iranian calendar: @@ -1531,10 +1582,23 @@ # be changed back to its previous state on the 24 hours of the # thirtieth day of Shahrivar. # +# From Ali Mirjamali (2022-05-10): +# Official IR News Agency announcement: irna.ir/xjJ3TT +# ... +# Highlights: DST will be cancelled for the next Iranian year 1402 +# (i.e 2023-March-21) and forthcoming years. +# # Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Iran 1978 1980 - Mar 20 24:00 1:00 - -Rule Iran 1978 only - Oct 20 24:00 0 - +# Work around a bug in zic 2022a and earlier. +Rule Iran 1910 only - Jan 1 00:00 0 - +# +Rule Iran 1977 only - Mar 21 23:00 1:00 - +Rule Iran 1977 only - Oct 20 24:00 0 - +Rule Iran 1978 only - Mar 24 24:00 1:00 - +Rule Iran 1978 only - Aug 5 01:00 0 - +Rule Iran 1979 only - May 26 24:00 1:00 - Rule Iran 1979 only - Sep 18 24:00 0 - +Rule Iran 1980 only - Mar 20 24:00 1:00 - Rule Iran 1980 only - Sep 22 24:00 0 - Rule Iran 1991 only - May 2 24:00 1:00 - Rule Iran 1992 1995 - Mar 21 24:00 1:00 - @@ -1565,85 +1629,13 @@ Rule Iran 2017 2019 - Sep 21 24:00 0 - Rule Iran 2020 only - Mar 20 24:00 1:00 - Rule Iran 2020 only - Sep 20 24:00 0 - -Rule Iran 2021 2023 - Mar 21 24:00 1:00 - -Rule Iran 2021 2023 - Sep 21 24:00 0 - -Rule Iran 2024 only - Mar 20 24:00 1:00 - -Rule Iran 2024 only - Sep 20 24:00 0 - -Rule Iran 2025 2027 - Mar 21 24:00 1:00 - -Rule Iran 2025 2027 - Sep 21 24:00 0 - -Rule Iran 2028 2029 - Mar 20 24:00 1:00 - -Rule Iran 2028 2029 - Sep 20 24:00 0 - -Rule Iran 2030 2031 - Mar 21 24:00 1:00 - -Rule Iran 2030 2031 - Sep 21 24:00 0 - -Rule Iran 2032 2033 - Mar 20 24:00 1:00 - -Rule Iran 2032 2033 - Sep 20 24:00 0 - -Rule Iran 2034 2035 - Mar 21 24:00 1:00 - -Rule Iran 2034 2035 - Sep 21 24:00 0 - -Rule Iran 2036 2037 - Mar 20 24:00 1:00 - -Rule Iran 2036 2037 - Sep 20 24:00 0 - -Rule Iran 2038 2039 - Mar 21 24:00 1:00 - -Rule Iran 2038 2039 - Sep 21 24:00 0 - -Rule Iran 2040 2041 - Mar 20 24:00 1:00 - -Rule Iran 2040 2041 - Sep 20 24:00 0 - -Rule Iran 2042 2043 - Mar 21 24:00 1:00 - -Rule Iran 2042 2043 - Sep 21 24:00 0 - -Rule Iran 2044 2045 - Mar 20 24:00 1:00 - -Rule Iran 2044 2045 - Sep 20 24:00 0 - -Rule Iran 2046 2047 - Mar 21 24:00 1:00 - -Rule Iran 2046 2047 - Sep 21 24:00 0 - -Rule Iran 2048 2049 - Mar 20 24:00 1:00 - -Rule Iran 2048 2049 - Sep 20 24:00 0 - -Rule Iran 2050 2051 - Mar 21 24:00 1:00 - -Rule Iran 2050 2051 - Sep 21 24:00 0 - -Rule Iran 2052 2053 - Mar 20 24:00 1:00 - -Rule Iran 2052 2053 - Sep 20 24:00 0 - -Rule Iran 2054 2055 - Mar 21 24:00 1:00 - -Rule Iran 2054 2055 - Sep 21 24:00 0 - -Rule Iran 2056 2057 - Mar 20 24:00 1:00 - -Rule Iran 2056 2057 - Sep 20 24:00 0 - -Rule Iran 2058 2059 - Mar 21 24:00 1:00 - -Rule Iran 2058 2059 - Sep 21 24:00 0 - -Rule Iran 2060 2062 - Mar 20 24:00 1:00 - -Rule Iran 2060 2062 - Sep 20 24:00 0 - -Rule Iran 2063 only - Mar 21 24:00 1:00 - -Rule Iran 2063 only - Sep 21 24:00 0 - -Rule Iran 2064 2066 - Mar 20 24:00 1:00 - -Rule Iran 2064 2066 - Sep 20 24:00 0 - -Rule Iran 2067 only - Mar 21 24:00 1:00 - -Rule Iran 2067 only - Sep 21 24:00 0 - -Rule Iran 2068 2070 - Mar 20 24:00 1:00 - -Rule Iran 2068 2070 - Sep 20 24:00 0 - -Rule Iran 2071 only - Mar 21 24:00 1:00 - -Rule Iran 2071 only - Sep 21 24:00 0 - -Rule Iran 2072 2074 - Mar 20 24:00 1:00 - -Rule Iran 2072 2074 - Sep 20 24:00 0 - -Rule Iran 2075 only - Mar 21 24:00 1:00 - -Rule Iran 2075 only - Sep 21 24:00 0 - -Rule Iran 2076 2078 - Mar 20 24:00 1:00 - -Rule Iran 2076 2078 - Sep 20 24:00 0 - -Rule Iran 2079 only - Mar 21 24:00 1:00 - -Rule Iran 2079 only - Sep 21 24:00 0 - -Rule Iran 2080 2082 - Mar 20 24:00 1:00 - -Rule Iran 2080 2082 - Sep 20 24:00 0 - -Rule Iran 2083 only - Mar 21 24:00 1:00 - -Rule Iran 2083 only - Sep 21 24:00 0 - -Rule Iran 2084 2086 - Mar 20 24:00 1:00 - -Rule Iran 2084 2086 - Sep 20 24:00 0 - -Rule Iran 2087 only - Mar 21 24:00 1:00 - -Rule Iran 2087 only - Sep 21 24:00 0 - -# -# The following rules are approximations starting in the year 2088. -# These are the best post-2088 approximations available, given the -# restrictions of a single rule using ordinary Gregorian dates. -# At some point this table will need to be extended, though quite -# possibly Iran will change the rules first. -Rule Iran 2088 max - Mar 20 24:00 1:00 - -Rule Iran 2088 max - Sep 20 24:00 0 - +Rule Iran 2021 2022 - Mar 21 24:00 1:00 - +Rule Iran 2021 2022 - Sep 21 24:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Asia/Tehran 3:25:44 - LMT 1916 - 3:25:44 - TMT 1946 # Tehran Mean Time - 3:30 - +0330 1977 Nov + 3:25:44 - TMT 1935 Jun 13 # Tehran Mean Time + 3:30 Iran +0330/+0430 1977 Oct 20 24:00 4:00 Iran +04/+05 1979 3:30 Iran +0330/+0430 @@ -2465,9 +2457,9 @@ # the third time belt (before 1930 this means +03). # From Alexander Konzurovski (2018-12-20): -# Qyzyolrda Region (Asia/Qyzylorda) is changing its time zone from -# UTC+6 to UTC+5 effective December 21st, 2018. The legal document is -# located here: http://adilet.zan.kz/rus/docs/P1800000817 (russian language). +# (Asia/Qyzylorda) is changing its time zone from UTC+6 to UTC+5 +# effective December 21st, 2018.... +# http://adilet.zan.kz/rus/docs/P1800000817 (russian language). # Zone NAME STDOFF RULES FORMAT [UNTIL] # @@ -2744,20 +2736,8 @@ Rule NBorneo 1935 1941 - Sep 14 0:00 0:20 - Rule NBorneo 1935 1941 - Dec 14 0:00 0 - # -# peninsular Malaysia -# taken from Mok Ly Yng (2003-10-30) -# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html -# This agrees with Singapore since 1905-06-01. -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 - 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. - 7:00 - +07 1933 Jan 1 - 7:00 0:20 +0720 1936 Jan 1 - 7:20 - +0720 1941 Sep 1 - 7:30 - +0730 1942 Feb 16 - 9:00 - +09 1945 Sep 12 - 7:30 - +0730 1982 Jan 1 - 8:00 - +08 +# For peninsular Malaysia see Asia/Singapore. +# # Sabah & Sarawak # From Paul Eggert (2014-08-12): # The data entries here are mostly from Shanks & Pottenger, but the 1942, 1945 @@ -2768,12 +2748,14 @@ 8:00 NBorneo +08/+0820 1942 Feb 16 9:00 - +09 1945 Sep 12 8:00 - +08 +Link Asia/Kuching Asia/Brunei # Maldives # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Indian/Maldives 4:54:00 - LMT 1880 # Malé 4:54:00 - MMT 1960 # Malé Mean Time 5:00 - +05 +Link Indian/Maldives Indian/Kerguelen # Mongolia @@ -3608,6 +3590,7 @@ 9:00 - +09 1945 Sep 12 7:30 - +0730 1982 Jan 1 8:00 - +08 +Link Asia/Singapore Asia/Kuala_Lumpur # Spratly Is # no information @@ -3842,7 +3825,7 @@ Zone Asia/Dushanbe 4:35:12 - LMT 1924 May 2 5:00 - +05 1930 Jun 21 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00s - 5:00 1:00 +05/+06 1991 Sep 9 2:00s + 5:00 1:00 +06 1991 Sep 9 2:00s 5:00 - +05 # Thailand @@ -3852,6 +3835,7 @@ 7:00 - +07 Link Asia/Bangkok Asia/Phnom_Penh # Cambodia Link Asia/Bangkok Asia/Vientiane # Laos +Link Asia/Bangkok Indian/Christmas # Turkmenistan # From Shanks & Pottenger. @@ -3867,6 +3851,8 @@ Zone Asia/Dubai 3:41:12 - LMT 1920 4:00 - +04 Link Asia/Dubai Asia/Muscat # Oman +Link Asia/Dubai Indian/Mahe +Link Asia/Dubai Indian/Reunion # Uzbekistan # Byalokoz 1919 says Uzbekistan was 4:27:53. @@ -3878,7 +3864,8 @@ 6:00 - +06 1982 Apr 1 5:00 RussiaAsia +05/+06 1992 5:00 - +05 -# Milne says Tashkent was 4:37:10.8; round to nearest. +# Milne says Tashkent was 4:37:10.8. + #STDOFF 4:37:10.8 Zone Asia/Tashkent 4:37:11 - LMT 1924 May 2 5:00 - +05 1930 Jun 21 6:00 RussiaAsia +06/+07 1991 Mar 31 2:00 @@ -3897,7 +3884,7 @@ # The English-language name of Vietnam's most populous city is "Ho Chi Minh # City"; use Ho_Chi_Minh below to avoid a name of more than 14 characters. -# From Paul Eggert (2014-10-21) after a heads-up from Trần Ngọc Quân: +# From Paul Eggert (2022-07-27) after a 2014 heads-up from Trần Ngọc Quân: # Trần Tiến Bình's authoritative book "Lịch Việt Nam: thế kỷ XX-XXI (1901-2100)" # (Nhà xuất bản Văn Hoá - Thông Tin, Hanoi, 2005), pp 49-50, # is quoted verbatim in: @@ -3909,8 +3896,8 @@ # The 1906 transition was effective July 1 and standardized Indochina to # Phù Liễn Observatory, legally 104° 17' 17" east of Paris. # It's unclear whether this meant legal Paris Mean Time (00:09:21) or -# the Paris Meridian (2° 20' 14.03" E); the former yields 07:06:30.1333... -# and the latter 07:06:29.333... so either way it rounds to 07:06:30, +# the Paris Meridian; for now guess the former and round the exact +# 07:06:30.1333... to 07:06:30.13 as the legal spec used 66 2/3 ms precision. # which is used below even though the modern-day Phù Liễn Observatory # is closer to 07:06:31. Abbreviate Phù Liễn Mean Time as PLMT. # @@ -3937,7 +3924,8 @@ # NXB Thuận Hoá, Huế, 1995. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Asia/Ho_Chi_Minh 7:06:40 - LMT 1906 Jul 1 + #STDOFF 7:06:30.13 +Zone Asia/Ho_Chi_Minh 7:06:30 - LMT 1906 Jul 1 7:06:30 - PLMT 1911 May 1 # Phù Liễn MT 7:00 - +07 1942 Dec 31 23:00 8:00 - +08 1945 Mar 14 23:00 --- contrib/tzdata/australasia.orig +++ contrib/tzdata/australasia @@ -252,16 +252,10 @@ 10:00 AT AE%sT # Christmas -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Christmas 7:02:52 - LMT 1895 Feb - 7:00 - +07 +# See Asia/Bangkok. # Cocos (Keeling) Is -# These islands were ruled by the Ross family from about 1830 to 1978. -# We don't know when standard time was introduced; for now, we guess 1900. -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Indian/Cocos 6:27:40 - LMT 1900 - 6:30 - +0630 +# See Asia/Yangon. # Fiji @@ -478,6 +472,11 @@ # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki 12:00 - +12 +Link Pacific/Tarawa Pacific/Funafuti +Link Pacific/Tarawa Pacific/Majuro +Link Pacific/Tarawa Pacific/Wake +Link Pacific/Tarawa Pacific/Wallis + Zone Pacific/Kanton 0 - -00 1937 Aug 31 -12:00 - -12 1979 Oct -11:00 - -11 1994 Dec 31 @@ -491,15 +490,8 @@ # See Pacific/Guam. # Marshall Is +# See Pacific/Tarawa for most locations. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Majuro 11:24:48 - LMT 1901 - 11:00 - +11 1914 Oct - 9:00 - +09 1919 Feb 1 - 11:00 - +11 1937 - 10:00 - +10 1941 Apr 1 - 9:00 - +09 1944 Jan 30 - 11:00 - +11 1969 Oct - 12:00 - +12 Zone Pacific/Kwajalein 11:09:20 - LMT 1901 11:00 - +11 1937 10:00 - +10 1941 Apr 1 @@ -509,22 +501,9 @@ 12:00 - +12 # Micronesia +# For Chuuk and Yap see Pacific/Port_Moresby. +# For Pohnpei see Pacific/Guadalcanal. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31 - 10:07:08 - LMT 1901 - 10:00 - +10 1914 Oct - 9:00 - +09 1919 Feb 1 - 10:00 - +10 1941 Apr 1 - 9:00 - +09 1945 Aug - 10:00 - +10 -Zone Pacific/Pohnpei -13:27:08 - LMT 1844 Dec 31 # Kolonia - 10:32:52 - LMT 1901 - 11:00 - +11 1914 Oct - 9:00 - +09 1919 Feb 1 - 11:00 - +11 1937 - 10:00 - +10 1941 Apr 1 - 9:00 - +09 1945 Aug - 11:00 - +11 Zone Pacific/Kosrae -13:08:04 - LMT 1844 Dec 31 10:51:56 - LMT 1901 11:00 - +11 1914 Oct @@ -594,12 +573,12 @@ Zone Pacific/Auckland 11:39:04 - LMT 1868 Nov 2 11:30 NZ NZ%sT 1946 Jan 1 12:00 NZ NZ%sT +Link Pacific/Auckland Antarctica/McMurdo + Zone Pacific/Chatham 12:13:48 - LMT 1868 Nov 2 12:15 - +1215 1946 Jan 1 12:45 Chatham +1245/+1345 -Link Pacific/Auckland Antarctica/McMurdo - # Auckland Is # uninhabited; Māori and Moriori, colonial settlers, pastoralists, sealers, # and scientific personnel have wintered @@ -658,7 +637,7 @@ # Niue -# See Pacific/Raratonga comments for 1952 transition. +# See Pacific/Rarotonga comments for 1952 transition. # # From Tim Parenti (2021-09-13): # Consecutive contemporaneous editions of The Air Almanac listed -11:20 for @@ -694,6 +673,7 @@ 9:48:32 - PMMT 1895 # Port Moresby Mean Time 10:00 - +10 Link Pacific/Port_Moresby Antarctica/DumontDUrville +Link Pacific/Port_Moresby Pacific/Chuuk # # From Paul Eggert (2014-10-13): # Base the Bougainville entry on the Arawa-Kieta region, which appears to have @@ -821,6 +801,7 @@ # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara 11:00 - +11 +Link Pacific/Guadalcanal Pacific/Pohnpei # Tokelau # @@ -861,9 +842,7 @@ 13:00 Tonga +13/+14 # Tuvalu -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Funafuti 11:56:52 - LMT 1901 - 12:00 - +12 +# See Pacific/Tarawa. # US minor outlying islands @@ -922,9 +901,7 @@ # uninhabited since World War II; was probably like Pacific/Kiritimati # Wake -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Wake 11:06:28 - LMT 1901 - 12:00 - +12 +# See Pacific/Tarawa. # Vanuatu @@ -963,9 +940,7 @@ 11:00 Vanuatu +11/+12 # Wallis and Futuna -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Pacific/Wallis 12:15:20 - LMT 1901 - 12:00 - +12 +# See Pacific/Tarawa. ############################################################################### @@ -1283,6 +1258,7 @@ # to have the extra hour of sunshine removed from their area." See: # Daylight saving coming to WA in 2019. Guardian Express. 2018-04-01. # https://www.communitynews.com.au/guardian-express/news/exclusive-daylight-savings-coming-wa-summer-2018/ +# [The article ends with "Today's date is April 1."] # Queensland @@ -1826,16 +1802,12 @@ # "In Marshall Islands, Friday is followed by Sunday", NY Times. 1993-08-22. # https://www.nytimes.com/1993/08/22/world/in-marshall-islands-friday-is-followed-by-sunday.html -# From Phake Nick (2018-10-27): -# ... pointed out that -# currently tzdata say Pacific/Kwajalein switched from GMT+11 to GMT-12 in -# 1969 October without explanation, however an 1993 article from NYT say it -# synchorized its day with US mainland about 40 years ago and thus the switch -# should occur at around 1950s instead. -# -# From Paul Eggert (2018-11-18): -# The NYT (actually, AP) article is vague and possibly wrong about this. -# The article says the earlier switch was "40 years ago when the United States +# From Paul Eggert (2022-03-31): +# Phake Nick (2018-10-27) noted 's +# citation of a 1993 AP article published in the New York Times saying +# Kwajalein synchronized its day with the US mainland about 40 years earlier. +# However the AP article is vague and possibly wrong about this. The article +# says the earlier switch was "about 40 years ago when the United States # Army established a missile test range here". However, the Kwajalein Test # Center was established on 1960-10-01 and was run by the US Navy. It was # transferred to the US Army on 1964-07-01. See "Seize the High Ground" @@ -1882,13 +1854,6 @@ # Like the Ladrones (see Guam commentary), assume the Spanish East Indies # kept American time until the Philippines switched at the end of 1844. -# Alan Eugene Davis writes (1996-03-16), -# "I am certain, having lived there for the past decade, that 'Truk' -# (now properly known as Chuuk) ... is in the time zone GMT+10." -# -# Shanks & Pottenger write that Truk switched from UT +10 to +11 -# on 1978-10-01; ignore this for now. - # From Paul Eggert (1999-10-29): # The Federated States of Micronesia Visitors Board writes in # The Federated States of Micronesia - Visitor Information (1999-01-26) @@ -2219,7 +2184,7 @@ # through the third Sunday in January at 03:00, like Fiji, for now. # From David Wade (2017-10-18): -# In August government was disolved by the King. The current prime minister +# In August government was dissolved by the King. The current prime minister # continued in office in care taker mode. It is easy to see that few # decisions will be made until elections 16th November. # @@ -2227,26 +2192,6 @@ # For now, guess that DST is discontinued. That's what the IATA is guessing. -# Wake - -# From Vernice Anderson, Personal Secretary to Philip Jessup, -# US Ambassador At Large (oral history interview, 1971-02-02): -# -# Saturday, the 14th [of October, 1950] - ... The time was all the -# more confusing at that point, because we had crossed the -# International Date Line, thus getting two Sundays. Furthermore, we -# discovered that Wake Island had two hours of daylight saving time -# making calculation of time in Washington difficult if not almost -# impossible. -# -# https://www.trumanlibrary.org/oralhist/andrsonv.htm - -# From Paul Eggert (2003-03-23): -# We have no other report of DST in Wake Island, so omit this info for now. - -# See also the commentary for Micronesia. - - ############################################################################### # The International Date Line --- contrib/tzdata/backward.orig +++ contrib/tzdata/backward @@ -4,10 +4,15 @@ # 2009-05-17 by Arthur David Olson. # This file provides links from old or merged timezone names to current ones. -# Many names changed in late 1993. Several of these names are +# Many names changed in late 1993, and many merged names moved here +# in the period from 2013 through 2022. Several of these names are # also present in the file 'backzone', which has data important only # for pre-1970 timestamps and so is out of scope for tzdb proper. +# Although this file is optional and tzdb will work if you omit it by +# building with 'make BACKWARD=', in practice downstream users +# typically use this file for backward compatibility. + # Link TARGET LINK-NAME Link Africa/Nairobi Africa/Asmera Link Africa/Abidjan Africa/Timbuktu @@ -48,7 +53,7 @@ Link Asia/Makassar Asia/Ujung_Pandang Link Asia/Ulaanbaatar Asia/Ulan_Bator Link Atlantic/Faroe Atlantic/Faeroe -Link Europe/Oslo Atlantic/Jan_Mayen +Link Europe/Berlin Atlantic/Jan_Mayen Link Australia/Sydney Australia/ACT Link Australia/Sydney Australia/Canberra Link Australia/Hobart Australia/Currie @@ -83,6 +88,7 @@ Link Europe/Dublin Eire Link Etc/UTC Etc/UCT Link Europe/London Europe/Belfast +Link Europe/Kyiv Europe/Kiev Link Europe/Chisinau Europe/Tiraspol Link Europe/London GB Link Europe/London GB-Eire @@ -91,7 +97,7 @@ Link Etc/GMT GMT0 Link Etc/GMT Greenwich Link Asia/Hong_Kong Hongkong -Link Atlantic/Reykjavik Iceland +Link Africa/Abidjan Iceland Link Asia/Tehran Iran Link Asia/Jerusalem Israel Link America/Jamaica Jamaica @@ -107,10 +113,10 @@ Link Asia/Shanghai PRC Link Pacific/Kanton Pacific/Enderbury Link Pacific/Honolulu Pacific/Johnston -Link Pacific/Pohnpei Pacific/Ponape +Link Pacific/Guadalcanal Pacific/Ponape Link Pacific/Pago_Pago Pacific/Samoa -Link Pacific/Chuuk Pacific/Truk -Link Pacific/Chuuk Pacific/Yap +Link Pacific/Port_Moresby Pacific/Truk +Link Pacific/Port_Moresby Pacific/Yap Link Europe/Warsaw Poland Link Europe/Lisbon Portugal Link Asia/Taipei ROC --- contrib/tzdata/backzone.orig +++ contrib/tzdata/backzone @@ -65,6 +65,11 @@ # Zones are sorted by zone name. Each zone is preceded by the # name of the country that the zone is in, along with any other # commentary and rules associated with the entry. +# If the zone overrides links in the main data, it +# is followed by the corresponding Link lines. +# If the zone overrides main-data links only when building with +# PACKRATLIST=zone.tab, it is followed by a commented-out Link line +# that starts with "#PACKRATLIST zone.tab". # # As explained in the zic man page, the zone columns are: # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -181,6 +186,7 @@ 0:00 - GMT 1934 Feb 26 -1:00 - -01 1960 Jun 20 0:00 - GMT +#PACKRATLIST zone.tab Link Africa/Bamako Africa/Timbuktu # Central African Republic Zone Africa/Bangui 1:14:20 - LMT 1912 @@ -498,6 +504,7 @@ -6:00 1:00 CDT 1942 Feb 9 2:00s -6:00 Canada C%sT 1945 Sep 30 2:00 -5:00 - EST +#PACKRATLIST zone.tab Link America/Atikokan America/Coral_Harbour # Quebec east of Natashquan @@ -829,6 +836,35 @@ Zone Antarctica/Syowa 0 - -00 1957 Jan 29 3:00 - +03 +# Vostok, Antarctica +# +# Vostok, since 1957-12-16, temporarily closed 1994-02/1994-11 +# From Craig Mundell (1994-12-15): +# http://quest.arc.nasa.gov/antarctica/QA/computers/Directions,Time,ZIP +# Vostok, which is one of the Russian stations, is set on the same +# time as Moscow, Russia. +# +# From Lee Hotz (2001-03-08): +# I queried the folks at Columbia who spent the summer at Vostok and this is +# what they had to say about time there: +# "in the US Camp (East Camp) we have been on New Zealand (McMurdo) +# time, which is 12 hours ahead of GMT. The Russian Station Vostok was +# 6 hours behind that (although only 2 miles away, i.e. 6 hours ahead +# of GMT). This is a time zone I think two hours east of Moscow. The +# natural time zone is in between the two: 8 hours ahead of GMT." +# +# From Paul Eggert (2001-05-04): +# This seems to be hopelessly confusing, so I asked Lee Hotz about it +# in person. He said that some Antarctic locations set their local +# time so that noon is the warmest part of the day, and that this +# changes during the year and does not necessarily correspond to mean +# solar noon. So the Vostok time might have been whatever the clocks +# happened to be during their visit. So we still don't really know what time +# it is at Vostok. But we'll guess +06. +# +Zone Antarctica/Vostok 0 - -00 1957 Dec 16 + 6:00 - +06 + # Yemen # Milne says 2:59:54 was the meridian of the saluting battery at Aden, # and that Yemen was at 1:55:56, the meridian of the Hagia Sophia. @@ -867,6 +903,11 @@ 4:00 - +04 1972 Jun 3:00 - +03 +# Brunei +Zone Asia/Brunei 7:39:40 - LMT 1926 Mar # Bandar Seri Begawan + 7:30 - +0730 1933 + 8:00 - +08 + # India # # From Paul Eggert (2014-09-06): @@ -922,6 +963,20 @@ 5:00 - +05 1980 May 8:00 PRC C%sT +# peninsular Malaysia +# taken from Mok Ly Yng (2003-10-30) +# https://web.archive.org/web/20190822231045/http://www.math.nus.edu.sg/~mathelmr/teaching/timezone.html +# This agrees with Singapore since 1905-06-01. +Zone Asia/Kuala_Lumpur 6:46:46 - LMT 1901 Jan 1 + 6:55:25 - SMT 1905 Jun 1 # Singapore M.T. + 7:00 - +07 1933 Jan 1 + 7:00 0:20 +0720 1936 Jan 1 + 7:20 - +0720 1941 Sep 1 + 7:30 - +0730 1942 Feb 16 + 9:00 - +09 1945 Sep 12 + 7:30 - +0730 1982 Jan 1 + 8:00 - +08 + # Kuwait Zone Asia/Kuwait 3:11:56 - LMT 1950 3:00 - +03 @@ -995,6 +1050,64 @@ # From Whitman: Zone Atlantic/Jan_Mayen -1:00 - -01 +# Iceland +# +# From Adam David (1993-11-06): +# The name of the timezone in Iceland for system / mail / news purposes is GMT. +# +# (1993-12-05): +# This material is paraphrased from the 1988 edition of the University of +# Iceland Almanak. +# +# From January 1st, 1908 the whole of Iceland was standardised at 1 hour +# behind GMT. Previously, local mean solar time was used in different parts +# of Iceland, the almanak had been based on Reykjavík mean solar time which +# was 1 hour and 28 minutes behind GMT. +# +# "first day of winter" referred to [below] means the first day of the 26 weeks +# of winter, according to the old icelandic calendar that dates back to the +# time the norsemen first settled Iceland. The first day of winter is always +# Saturday, but is not dependent on the Julian or Gregorian calendars. +# +# (1993-12-10): +# I have a reference from the Oxford Icelandic-English dictionary for the +# beginning of winter, which ties it to the ecclesiastical calendar (and thus +# to the julian/gregorian calendar) over the period in question. +# the winter begins on the Saturday next before St. Luke's day +# (old style), or on St. Luke's day, if a Saturday. +# St. Luke's day ought to be traceable from ecclesiastical sources. "old style" +# might be a reference to the Julian calendar as opposed to Gregorian, or it +# might mean something else (???). +# +# From Paul Eggert (2014-11-22): +# The information below is taken from the 1988 Almanak; see +# http://www.almanak.hi.is/klukkan.html +# +Rule Iceland 1917 1919 - Feb 19 23:00 1:00 - +Rule Iceland 1917 only - Oct 21 1:00 0 - +Rule Iceland 1918 1919 - Nov 16 1:00 0 - +Rule Iceland 1921 only - Mar 19 23:00 1:00 - +Rule Iceland 1921 only - Jun 23 1:00 0 - +Rule Iceland 1939 only - Apr 29 23:00 1:00 - +Rule Iceland 1939 only - Oct 29 2:00 0 - +Rule Iceland 1940 only - Feb 25 2:00 1:00 - +Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 - +Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 - +# 1943-1946 - first Sunday in March until first Sunday in winter +Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 - +Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 - +# 1947-1967 - first Sunday in April until first Sunday in winter +Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 - +# 1949 and 1967 Oct transitions delayed by 1 week +Rule Iceland 1949 only - Oct 30 1:00s 0 - +Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 - +Rule Iceland 1967 only - Oct 29 1:00s 0 - + +Zone Atlantic/Reykjavik -1:28 - LMT 1908 + -1:00 Iceland -01/+00 1968 Apr 7 1:00s + 0:00 - GMT +Link Atlantic/Reykjavik Iceland + # St Helena Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown -0:22:48 - JMT 1951 # Jamestown Mean Time @@ -1006,6 +1119,82 @@ 10:00 Aus AE%sT 1968 Oct 15 10:00 AT AE%sT + +# Netherlands + +# Howse writes that the Netherlands' railways used GMT between 1892 and 1940, +# but for other purposes the Netherlands used Amsterdam mean time. + +# However, Robert H. van Gent writes (2001-04-01): +# Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00 +# Amsterdam mean time) onwards, the whole of the Netherlands (including +# the Dutch railways) was required by law to observe Amsterdam mean time +# (19 minutes 32.13 seconds ahead of GMT). This had already been the +# common practice (except for the railways) for many decades but it was +# not until 1909 when the Dutch government finally defined this by law. +# On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and +# was generally known as Dutch Time ("Nederlandse Tijd"). +# +# (2001-04-08): +# 1892-05-01 was the date when the Dutch railways were by law required to +# observe GMT while the remainder of the Netherlands adhered to the common +# practice of following Amsterdam mean time. +# +# (2001-04-09): +# In 1835 the authorities of the province of North Holland requested the +# municipal authorities of the towns and cities in the province to observe +# Amsterdam mean time but I do not know in how many cases this request was +# actually followed. +# +# From 1852 onwards the Dutch telegraph offices were by law required to +# observe Amsterdam mean time. As the time signals from the observatory of +# Leiden were also distributed by the telegraph system, I assume that most +# places linked up with the telegraph (and railway) system automatically +# adopted Amsterdam mean time. +# +# Although the early Dutch railway companies initially observed a variety +# of times, most of them had adopted Amsterdam mean time by 1858 but it +# was not until 1866 when they were all required by law to observe +# Amsterdam mean time. + +# The data entries before 1945 are taken from +# https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm + +# From Paul Eggert (2021-05-09): +# I invented the abbreviations AMT for Amsterdam Mean Time and NST for +# Netherlands Summer Time, used in the Netherlands from 1835 to 1937. + +Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time +Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time +Rule Neth 1917 only - Apr 16 2:00s 1:00 NST +Rule Neth 1917 only - Sep 17 2:00s 0 AMT +Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST +Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT +Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST +Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT +Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST +Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST +Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST +# From 1926 through 1939 DST began 05-15, except that it was delayed by a week +# in years when 05-15 fell in the Pentecost weekend. +Rule Neth 1926 1931 - May 15 2:00s 1:00 NST +Rule Neth 1932 only - May 22 2:00s 1:00 NST +Rule Neth 1933 1936 - May 15 2:00s 1:00 NST +Rule Neth 1937 only - May 22 2:00s 1:00 NST +Rule Neth 1937 only - Jul 1 0:00 1:00 S +Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 - +Rule Neth 1938 1939 - May 15 2:00s 1:00 S +Rule Neth 1945 only - Apr 2 2:00s 1:00 S +Rule Neth 1945 only - Sep 16 2:00s 0 - + #STDOFF 0:19:32.13 +Zone Europe/Amsterdam 0:19:32 - LMT 1835 + 0:19:32 Neth %s 1937 Jul 1 + 0:20 Neth +0020/+0120 1940 May 16 0:00 + 1:00 C-Eur CE%sT 1945 Apr 2 2:00 + 1:00 Neth CE%sT 1977 + 1:00 EU CE%sT + + # Northern Ireland Zone Europe/Belfast -0:23:40 - LMT 1880 Aug 2 -0:25:21 - DMT 1916 May 21 2:00 @@ -1017,6 +1206,60 @@ 0:00 GB-Eire %s 1996 0:00 EU GMT/BST + +# Denmark + +# From Jesper Nørgaard Welen (2005-04-26): +# the law [introducing standard time] was in effect from 1894-01-01.... +# The page https://www.retsinformation.dk/eli/lta/1893/83 +# confirms this, and states that the law was put forth 1893-03-29. +# +# The EU [actually, EEC and Euratom] treaty with effect from 1973: +# https://www.retsinformation.dk/eli/lta/1972/21100 +# +# This provoked a new law from 1974 to make possible summer time changes +# in subsequent decrees with the law +# https://www.retsinformation.dk/eli/lta/1974/223 +# +# It seems however that no decree was set forward until 1980. I have +# not found any decree, but in another related law, the effecting DST +# changes are stated explicitly to be from 1980-04-06 at 02:00 to +# 1980-09-28 at 02:00. If this is true, this differs slightly from +# the EU rule in that DST runs to 02:00, not 03:00. We don't know +# when Denmark began using the EU rule correctly, but we have only +# confirmation of the 1980-time, so I presume it was correct in 1981: +# The law is about the management of the extra hour, concerning +# working hours reported and effect on obligatory-rest rules (which +# was suspended on that night): +# https://web.archive.org/web/20140104053304/https://www.retsinformation.dk/Forms/R0710.aspx?id=60267 + +# From Jesper Nørgaard Welen (2005-06-11): +# The Herning Folkeblad (1980-09-26) reported that the night between +# Saturday and Sunday the clock is set back from three to two. + +# From Paul Eggert (2005-06-11): +# Hence the "02:00" of the 1980 law refers to standard time, not +# wall-clock time, and so the EU rules were in effect in 1980. + +Rule Denmark 1916 only - May 14 23:00 1:00 S +Rule Denmark 1916 only - Sep 30 23:00 0 - +Rule Denmark 1940 only - May 15 0:00 1:00 S +Rule Denmark 1945 only - Apr 2 2:00s 1:00 S +Rule Denmark 1945 only - Aug 15 2:00s 0 - +Rule Denmark 1946 only - May 1 2:00s 1:00 S +Rule Denmark 1946 only - Sep 1 2:00s 0 - +Rule Denmark 1947 only - May 4 2:00s 1:00 S +Rule Denmark 1947 only - Aug 10 2:00s 0 - +Rule Denmark 1948 only - May 9 2:00s 1:00 S +Rule Denmark 1948 only - Aug 8 2:00s 0 - +# +Zone Europe/Copenhagen 0:50:20 - LMT 1890 + 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT + 1:00 Denmark CE%sT 1942 Nov 2 2:00s + 1:00 C-Eur CE%sT 1945 Apr 2 2:00 + 1:00 Denmark CE%sT 1980 + 1:00 EU CE%sT + # Guernsey # Data from Joseph S. Myers # https://mm.icann.org/pipermail/tz/2013-September/019883.html @@ -1072,6 +1315,86 @@ 1:00 - CET 1982 Nov 27 1:00 EU CE%sT + +# Luxembourg + +# Whitman disagrees with most of these dates in minor ways; +# go with Shanks & Pottenger. +Rule Lux 1916 only - May 14 23:00 1:00 S +Rule Lux 1916 only - Oct 1 1:00 0 - +Rule Lux 1917 only - Apr 28 23:00 1:00 S +Rule Lux 1917 only - Sep 17 1:00 0 - +Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S +Rule Lux 1918 only - Sep Mon>=15 2:00s 0 - +Rule Lux 1919 only - Mar 1 23:00 1:00 S +Rule Lux 1919 only - Oct 5 3:00 0 - +Rule Lux 1920 only - Feb 14 23:00 1:00 S +Rule Lux 1920 only - Oct 24 2:00 0 - +Rule Lux 1921 only - Mar 14 23:00 1:00 S +Rule Lux 1921 only - Oct 26 2:00 0 - +Rule Lux 1922 only - Mar 25 23:00 1:00 S +Rule Lux 1922 only - Oct Sun>=2 1:00 0 - +Rule Lux 1923 only - Apr 21 23:00 1:00 S +Rule Lux 1923 only - Oct Sun>=2 2:00 0 - +Rule Lux 1924 only - Mar 29 23:00 1:00 S +Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 - +Rule Lux 1925 only - Apr 5 23:00 1:00 S +Rule Lux 1926 only - Apr 17 23:00 1:00 S +Rule Lux 1927 only - Apr 9 23:00 1:00 S +Rule Lux 1928 only - Apr 14 23:00 1:00 S +Rule Lux 1929 only - Apr 20 23:00 1:00 S + +Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun + 1:00 Lux CE%sT 1918 Nov 25 + 0:00 Lux WE%sT 1929 Oct 6 2:00s + 0:00 Belgium WE%sT 1940 May 14 3:00 + 1:00 C-Eur WE%sT 1944 Sep 18 3:00 + 1:00 Belgium CE%sT 1977 + 1:00 EU CE%sT + +# Monaco +# +# From Michael Deckers (2020-06-12): +# In the "Journal de Monaco" of 1892-05-24, online at +# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/b1c67c12c5af11b41ea888fb048e4fe8.pdf +# we read: ... +# [In virtue of a Sovereign Ordinance of the May 13 of the current [year], +# legal time in the Principality will be set to, from the date of June 1, +# 1892 onwards, to the meridian of Paris, as in France.] +# In the "Journal de Monaco" of 1911-03-28, online at +# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/de74ffb7db53d4f599059fe8f0ed482a.pdf +# we read an ordinance of 1911-03-16: ... +# [Legal time in the Principality will be set, from the date of promulgation +# of the present ordinance, to legal time in France.... Consequently, legal +# time will be retarded by 9 minutes and 21 seconds.] +# +Zone Europe/Monaco 0:29:32 - LMT 1892 Jun 1 + 0:09:21 - PMT 1911 Mar 29 # Paris Mean Time + 0:00 France WE%sT 1945 Sep 16 3:00 + 1:00 France CE%sT 1977 + 1:00 EU CE%sT + + +# Norway + +# http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks & +# Pottenger. +Rule Norway 1916 only - May 22 1:00 1:00 S +Rule Norway 1916 only - Sep 30 0:00 0 - +Rule Norway 1945 only - Apr 2 2:00s 1:00 S +Rule Norway 1945 only - Oct 1 2:00s 0 - +Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S +Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - +Rule Norway 1965 only - Apr 25 2:00s 1:00 S + +Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 + 1:00 Norway CE%sT 1940 Aug 10 23:00 + 1:00 C-Eur CE%sT 1945 Apr 2 2:00 + 1:00 Norway CE%sT 1980 + 1:00 EU CE%sT +Link Europe/Oslo Arctic/Longyearbyen +#PACKRATLIST zone.tab Link Europe/Oslo Atlantic/Jan_Mayen + # Bosnia and Herzegovina Zone Europe/Sarajevo 1:13:40 - LMT 1884 1:00 - CET 1941 Apr 18 23:00 @@ -1089,6 +1412,62 @@ 1:00 EU CE%sT +# Sweden + +# From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger: +# +# The law "Svensk författningssamling 1878, no 14" about standard time in 1879: +# From the beginning of 1879 (that is 01-01 00:00) the time for all +# places in the country is "the mean solar time for the meridian at +# three degrees, or twelve minutes of time, to the west of the +# meridian of the Observatory of Stockholm". The law is dated 1878-05-31. +# +# The observatory at that time had the meridian 18° 03' 30" +# eastern longitude = 01:12:14 in time. Less 12 minutes gives the +# national standard time as 01:00:14 ahead of GMT.... +# +# About the beginning of CET in Sweden. The lawtext ("Svensk +# författningssamling 1899, no 44") states, that "from the beginning +# of 1900... ... the same as the mean solar time for the meridian at +# the distance of one hour of time from the meridian of the English +# observatory at Greenwich, or at 12 minutes 14 seconds to the west +# from the meridian of the Observatory of Stockholm". The law is dated +# 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time +# in Sweden is 01:00:00 ahead of GMT. +# +# 1916: The lawtext ("Svensk författningssamling 1916, no 124") states +# that "1916-05-15 is considered to begin one hour earlier". It is +# pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00.... +# Further the law says, that "1916-09-30 is considered to end one hour later". +# +# The laws regulating [DST] are available on the site of the Swedish +# Parliament beginning with 1985 - the laws regulating 1980/1984 are +# not available on the site (to my knowledge they are only available +# in Swedish): (type +# "sommartid" without the quotes in the field "Fritext" and then click +# the Sök-button). +# +# (2001-05-13): +# +# I have now found a newspaper stating that at 1916-10-01 01:00 +# summertime the church-clocks etc were set back one hour to show +# 1916-10-01 00:00 standard time. The article also reports that some +# people thought the switch to standard time would take place already +# at 1916-10-01 00:00 summer time, but they had to wait for another +# hour before the event took place. +# +# Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. + +# An extra-special abbreviation style is SET for Swedish Time (svensk +# normaltid) 1879-1899, 3° west of the Stockholm Observatory. + +Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 + 1:00:14 - SET 1900 Jan 1 # Swedish Time + 1:00 - CET 1916 May 14 23:00 + 1:00 1:00 CEST 1916 Oct 1 1:00 + 1:00 - CET 1980 + 1:00 EU CE%sT + # Moldova / Transnistria Zone Europe/Tiraspol 1:58:32 - LMT 1880 @@ -1102,6 +1481,15 @@ 3:00 Russia MSK/MSD # Liechtenstein + +# From Paul Eggert (2022-07-21): +# Shanks & Pottenger say Vaduz is like Zurich starting June 1894. + +# From Alois Treindl (2019-07-04): +# I was able to access the online archive of the Vaduz paper Vaterland ... +# I could confirm from the paper that Liechtenstein did in fact follow +# the same DST in 1941 and 1942 as Switzerland did. + Zone Europe/Vaduz 0:38:04 - LMT 1894 Jun 1:00 Swiss CE%sT 1981 1:00 EU CE%sT @@ -1120,14 +1508,87 @@ 3:00 1:00 EAST 1954 May 29 23:00s 3:00 - EAT +# Christmas +Zone Indian/Christmas 7:02:52 - LMT 1895 Feb + 7:00 - +07 + +# Cocos (Keeling) Is +# These islands were ruled by the Ross family from about 1830 to 1978. +# We don't know when standard time was introduced; for now, we guess 1900. +Zone Indian/Cocos 6:27:40 - LMT 1900 + 6:30 - +0630 + # Comoros Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro 3:00 - EAT +# Kerguelen +Zone Indian/Kerguelen 0 - -00 1950 # Port-aux-Français + 5:00 - +05 + +# Seychelles +# +# From P Chan (2020-11-27): +# Standard Time was adopted on 1907-01-01. +# +# Standard Time Ordinance (Chapter 237) +# The Laws of Seychelles in Force on the 31st December, 1971, Vol. 6, p 571 +# https://books.google.com/books?id=efE-AQAAIAAJ&pg=PA571 +# +# From Tim Parenti (2020-12-05): +# A footnote on https://books.google.com/books?id=DYdDAQAAMAAJ&pg=PA1689 +# confirms that Ordinance No. 9 of 1906 "was brought into force on the 1st +# January, 1907." + +Zone Indian/Mahe 3:41:48 - LMT 1907 Jan 1 # Victoria + 4:00 - +04 +# From Paul Eggert (2001-05-30): +# Aldabra, Farquhar, and Desroches, originally dependencies of the +# Seychelles, were transferred to the British Indian Ocean Territory +# in 1965 and returned to Seychelles control in 1976. We don't know +# whether this affected their time zone, so omit this for now. +# Possibly the islands were uninhabited. + + # Mayotte Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou 3:00 - EAT +# Réunion +Zone Indian/Reunion 3:41:52 - LMT 1911 Jun # Saint-Denis + 4:00 - +04 +# +# Scattered Islands (Îles Éparses) administered from Réunion are as follows. +# The following information about them is taken from +# Îles Éparses (, 1997-07-22, +# in French; no longer available as of 1999-08-17). +# We have no info about their time zone histories. +# +# Bassas da India - uninhabited +# Europa Island - inhabited from 1905 to 1910 by two families +# Glorioso Is - inhabited until at least 1958 +# Juan de Nova - uninhabited +# Tromelin - inhabited until at least 1958 + +# Micronesia +# Also see Pacific/Pohnpei and commentary for Micronesia in 'australasia'. +# +# From Paul Eggert (2018-11-18): +# Alan Eugene Davis writes (1996-03-16), +# "I am certain, having lived there for the past decade, that 'Truk' +# (now properly known as Chuuk) ... is in the time zone GMT+10." +# Shanks & Pottenger write that Truk switched from UT +10 to +11 +# on 1978-10-01; ignore this for now. +Zone Pacific/Chuuk -13:52:52 - LMT 1844 Dec 31 + 10:07:08 - LMT 1901 + 10:00 - +10 1914 Oct + 9:00 - +09 1919 Feb 1 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1945 Aug + 10:00 - +10 +Link Pacific/Chuuk Pacific/Truk +Link Pacific/Chuuk Pacific/Yap + # Phoenix Islands, Kiribati # From Paul Eggert (2021-05-27): # Enderbury was inhabited 1860/1880s to mine guano, and 1938-03-06/1942-02-09 @@ -1140,9 +1601,23 @@ -12:00 - -12 1942 Feb 9 0 - -00 +# Tuvalu +Zone Pacific/Funafuti 11:56:52 - LMT 1901 + 12:00 - +12 + # Johnston Zone Pacific/Johnston -10:00 - HST +# Marshall Is +Zone Pacific/Majuro 11:24:48 - LMT 1901 + 11:00 - +11 1914 Oct + 9:00 - +09 1919 Feb 1 + 11:00 - +11 1937 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1944 Jan 30 + 11:00 - +11 1969 Oct + 12:00 - +12 + # Midway # # From Mark Brader (2005-01-23): @@ -1160,6 +1635,18 @@ -11:00 1:00 -10 1956 Sep 2 -11:00 - -11 +# Micronesia +# Also see Pacific/Chuuk and commentary for Micronesia in 'australasia'. +Zone Pacific/Pohnpei -13:27:08 - LMT 1844 Dec 31 # Kolonia + 10:32:52 - LMT 1901 + 11:00 - +11 1914 Oct + 9:00 - +09 1919 Feb 1 + 11:00 - +11 1937 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1945 Aug + 11:00 - +11 +Link Pacific/Pohnpei Pacific/Ponape + # N Mariana Is Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31 9:43:00 - LMT 1901 @@ -1167,6 +1654,33 @@ 10:00 - +10 2000 Dec 23 10:00 - ChST # Chamorro Standard Time + +# Wake + +# From Vernice Anderson, Personal Secretary to Philip Jessup, +# US Ambassador At Large (oral history interview, 1971-02-02): +# +# Saturday, the 14th [of October, 1950] - ... The time was all the +# more confusing at that point, because we had crossed the +# International Date Line, thus getting two Sundays. Furthermore, we +# discovered that Wake Island had two hours of daylight saving time +# making calculation of time in Washington difficult if not almost +# impossible. +# +# https://www.trumanlibrary.org/oralhist/andrsonv.htm + +# From Paul Eggert (2003-03-23): +# We have no other report of DST in Wake Island, so omit this info for now. + +# Also see commentary for Micronesia in 'australasia'. +Zone Pacific/Wake 11:06:28 - LMT 1901 + 12:00 - +12 + + +# Wallis and Futuna +Zone Pacific/Wallis 12:15:20 - LMT 1901 + 12:00 - +12 + # Local Variables: # coding: utf-8 # End: --- contrib/tzdata/calendars.orig +++ contrib/tzdata/calendars @@ -71,7 +71,7 @@ Grotefend's data -From: "Michael Palmer" [with one obvious typo fixed] +From: "Michael Palmer" [with two obvious typos fixed] Subject: Re: Gregorian Calendar (was Re: Another FHC related question Newsgroups: soc.genealogy.german Date: Tue, 9 Feb 1999 02:32:48 -800 @@ -142,7 +142,7 @@ 31 Dec 1700/ 12 Jan 1701 - Friesland, Groningen, Zürich, Bern, Basel, Geneva, - Turgau, and Schaffhausen + Thurgau, and Schaffhausen 1724 - Glarus, Appenzell, and the city of St. Gallen --- contrib/tzdata/etcetera.orig +++ contrib/tzdata/etcetera @@ -17,13 +17,17 @@ # behind GMT but uses the completely misleading abbreviation "GMT". Zone Etc/GMT 0 - GMT + +# The following zone is used by tzcode functions like gmtime, +# which load the "UTC" file to handle seconds properly. Zone Etc/UTC 0 - UTC # The following link uses older naming conventions, # but it belongs here, not in the file 'backward', -# as functions like gmtime load the "UTC" file to handle leap seconds properly. -# We want this to work even on installations that omit the other older names. -Link Etc/UTC UTC +# as it is needed for tzcode releases through 2022a, +# where functions like gmtime load "GMT" instead of the "Etc/UTC". +# We want this to work even on installations that omit 'backward'. +Link Etc/GMT GMT Link Etc/UTC Etc/Universal Link Etc/UTC Etc/Zulu --- contrib/tzdata/europe.orig +++ contrib/tzdata/europe @@ -303,8 +303,7 @@ # UT-00:25:22 and cites the International Telegraph Bureau. As it is # not clear that there was any practical significance to the change # from UT-00:25:22 to UT-00:25:21.1 in civil timekeeping, omit this -# transition for now and just use the latter value, omitting its -# fraction since our format cannot represent fractions. +# transition for now and just use the latter value. # "Countess Markievicz ... claimed that the [1916] abolition of Dublin Mean Time # was among various actions undertaken by the 'English' government that @@ -500,7 +499,7 @@ # Use Europe/London for Jersey, Guernsey, and the Isle of Man. # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00s +Zone Europe/London -0:01:15 - LMT 1847 Dec 1 0:00 GB-Eire %s 1968 Oct 27 1:00 - BST 1971 Oct 31 2:00u 0:00 GB-Eire %s 1996 @@ -538,7 +537,8 @@ Rule Eire 1996 max - Oct lastSun 1:00u -1:00 - # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Dublin -0:25:00 - LMT 1880 Aug 2 + #STDOFF -0:25:21.1 +Zone Europe/Dublin -0:25:21 - LMT 1880 Aug 2 -0:25:21 - DMT 1916 May 21 2:00s -0:25:21 1:00 IST 1916 Oct 1 2:00s 0:00 GB-Eire %s 1921 Dec 6 # independence @@ -961,6 +961,8 @@ 1:00 C-Eur CE%sT 1944 Sep 3 1:00 Belgium CE%sT 1977 1:00 EU CE%sT +Link Europe/Brussels Europe/Amsterdam +Link Europe/Brussels Europe/Luxembourg # Bosnia and Herzegovina # See Europe/Belgrade. @@ -1023,62 +1025,12 @@ # End of rearguard section. 1:00 Czech CE%sT 1979 1:00 EU CE%sT -# Use Europe/Prague also for Slovakia. +Link Europe/Prague Europe/Bratislava -# Denmark, Faroe Islands, and Greenland -# From Jesper Nørgaard Welen (2005-04-26): -# the law [introducing standard time] was in effect from 1894-01-01.... -# The page https://www.retsinformation.dk/eli/lta/1893/83 -# confirms this, and states that the law was put forth 1893-03-29. -# -# The EU [actually, EEC and Euratom] treaty with effect from 1973: -# https://www.retsinformation.dk/eli/lta/1972/21100 -# -# This provoked a new law from 1974 to make possible summer time changes -# in subsequent decrees with the law -# https://www.retsinformation.dk/eli/lta/1974/223 -# -# It seems however that no decree was set forward until 1980. I have -# not found any decree, but in another related law, the effecting DST -# changes are stated explicitly to be from 1980-04-06 at 02:00 to -# 1980-09-28 at 02:00. If this is true, this differs slightly from -# the EU rule in that DST runs to 02:00, not 03:00. We don't know -# when Denmark began using the EU rule correctly, but we have only -# confirmation of the 1980-time, so I presume it was correct in 1981: -# The law is about the management of the extra hour, concerning -# working hours reported and effect on obligatory-rest rules (which -# was suspended on that night): -# https://web.archive.org/web/20140104053304/https://www.retsinformation.dk/Forms/R0710.aspx?id=60267 - -# From Jesper Nørgaard Welen (2005-06-11): -# The Herning Folkeblad (1980-09-26) reported that the night between -# Saturday and Sunday the clock is set back from three to two. - -# From Paul Eggert (2005-06-11): -# Hence the "02:00" of the 1980 law refers to standard time, not -# wall-clock time, and so the EU rules were in effect in 1980. +# Denmark, Faroe Islands, and Greenland +# For Denmark see Europe/Berlin. -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Denmark 1916 only - May 14 23:00 1:00 S -Rule Denmark 1916 only - Sep 30 23:00 0 - -Rule Denmark 1940 only - May 15 0:00 1:00 S -Rule Denmark 1945 only - Apr 2 2:00s 1:00 S -Rule Denmark 1945 only - Aug 15 2:00s 0 - -Rule Denmark 1946 only - May 1 2:00s 1:00 S -Rule Denmark 1946 only - Sep 1 2:00s 0 - -Rule Denmark 1947 only - May 4 2:00s 1:00 S -Rule Denmark 1947 only - Aug 10 2:00s 0 - -Rule Denmark 1948 only - May 9 2:00s 1:00 S -Rule Denmark 1948 only - Aug 8 2:00s 0 - -# -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Copenhagen 0:50:20 - LMT 1890 - 0:50:20 - CMT 1894 Jan 1 # Copenhagen MT - 1:00 Denmark CE%sT 1942 Nov 2 2:00s - 1:00 C-Eur CE%sT 1945 Apr 2 2:00 - 1:00 Denmark CE%sT 1980 - 1:00 EU CE%sT Zone Atlantic/Faroe -0:27:04 - LMT 1908 Jan 11 # Tórshavn 0:00 - WET 1981 0:00 EU WE%sT @@ -1298,10 +1250,10 @@ Rule Finland 1981 1982 - Mar lastSun 2:00 1:00 S Rule Finland 1981 1982 - Sep lastSun 3:00 0 - -# Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document); -# round to nearest. +# Milne says Helsinki (Helsingfors) time was 1:39:49.2 (official document). # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF 1:39:49.2 Zone Europe/Helsinki 1:39:49 - LMT 1878 May 31 1:39:49 - HMT 1921 May # Helsinki Mean Time 2:00 Finland EE%sT 1983 @@ -1448,6 +1400,7 @@ 0:00 France WE%sT 1945 Sep 16 3:00 1:00 France CE%sT 1977 1:00 EU CE%sT +Link Europe/Paris Europe/Monaco # Germany @@ -1491,21 +1444,11 @@ 1:00 SovietZone CE%sT 1946 1:00 Germany CE%sT 1980 1:00 EU CE%sT +Link Europe/Berlin Arctic/Longyearbyen +Link Europe/Berlin Europe/Copenhagen +Link Europe/Berlin Europe/Oslo +Link Europe/Berlin Europe/Stockholm -# From Tobias Conradi (2011-09-12): -# Büsingen , surrounded by the Swiss canton -# Schaffhausen, did not start observing DST in 1980 as the rest of DE -# (West Germany at that time) and DD (East Germany at that time) did. -# DD merged into DE, the area is currently covered by code DE in ISO 3166-1, -# which in turn is covered by the zone Europe/Berlin. -# -# Source for the time in Büsingen 1980: -# http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3 - -# From Arthur David Olson (2012-03-03): -# Büsingen and Zurich have shared clocks since 1970. - -Link Europe/Zurich Europe/Busingen # Georgia # Please see the "asia" file for Asia/Tbilisi. @@ -1514,7 +1457,7 @@ # Gibraltar # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00s +Zone Europe/Gibraltar -0:21:24 - LMT 1880 Aug 2 0:00 GB-Eire %s 1957 Apr 14 2:00 1:00 - CET 1982 1:00 EU CE%sT @@ -1625,62 +1568,7 @@ 1:00 EU CE%sT # Iceland -# -# From Adam David (1993-11-06): -# The name of the timezone in Iceland for system / mail / news purposes is GMT. -# -# (1993-12-05): -# This material is paraphrased from the 1988 edition of the University of -# Iceland Almanak. -# -# From January 1st, 1908 the whole of Iceland was standardised at 1 hour -# behind GMT. Previously, local mean solar time was used in different parts -# of Iceland, the almanak had been based on Reykjavík mean solar time which -# was 1 hour and 28 minutes behind GMT. -# -# "first day of winter" referred to [below] means the first day of the 26 weeks -# of winter, according to the old icelandic calendar that dates back to the -# time the norsemen first settled Iceland. The first day of winter is always -# Saturday, but is not dependent on the Julian or Gregorian calendars. -# -# (1993-12-10): -# I have a reference from the Oxford Icelandic-English dictionary for the -# beginning of winter, which ties it to the ecclesiastical calendar (and thus -# to the julian/gregorian calendar) over the period in question. -# the winter begins on the Saturday next before St. Luke's day -# (old style), or on St. Luke's day, if a Saturday. -# St. Luke's day ought to be traceable from ecclesiastical sources. "old style" -# might be a reference to the Julian calendar as opposed to Gregorian, or it -# might mean something else (???). -# -# From Paul Eggert (2014-11-22): -# The information below is taken from the 1988 Almanak; see -# http://www.almanak.hi.is/klukkan.html -# -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Iceland 1917 1919 - Feb 19 23:00 1:00 - -Rule Iceland 1917 only - Oct 21 1:00 0 - -Rule Iceland 1918 1919 - Nov 16 1:00 0 - -Rule Iceland 1921 only - Mar 19 23:00 1:00 - -Rule Iceland 1921 only - Jun 23 1:00 0 - -Rule Iceland 1939 only - Apr 29 23:00 1:00 - -Rule Iceland 1939 only - Oct 29 2:00 0 - -Rule Iceland 1940 only - Feb 25 2:00 1:00 - -Rule Iceland 1940 1941 - Nov Sun>=2 1:00s 0 - -Rule Iceland 1941 1942 - Mar Sun>=2 1:00s 1:00 - -# 1943-1946 - first Sunday in March until first Sunday in winter -Rule Iceland 1943 1946 - Mar Sun>=1 1:00s 1:00 - -Rule Iceland 1942 1948 - Oct Sun>=22 1:00s 0 - -# 1947-1967 - first Sunday in April until first Sunday in winter -Rule Iceland 1947 1967 - Apr Sun>=1 1:00s 1:00 - -# 1949 and 1967 Oct transitions delayed by 1 week -Rule Iceland 1949 only - Oct 30 1:00s 0 - -Rule Iceland 1950 1966 - Oct Sun>=22 1:00s 0 - -Rule Iceland 1967 only - Oct 29 1:00s 0 - -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Atlantic/Reykjavik -1:28 - LMT 1908 - -1:00 Iceland -01/+00 1968 Apr 7 1:00s - 0:00 - GMT +# See Africa/Abidjan. # Italy # @@ -1796,19 +1684,19 @@ Rule Italy 1979 only - Sep 30 0:00s 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone Europe/Rome 0:49:56 - LMT 1866 Dec 12 - 0:49:56 - RMT 1893 Oct 31 23:49:56 # Rome Mean + 0:49:56 - RMT 1893 Oct 31 23:00u # Rome Mean 1:00 Italy CE%sT 1943 Sep 10 1:00 C-Eur CE%sT 1944 Jun 4 1:00 Italy CE%sT 1980 1:00 EU CE%sT +Link Europe/Rome Europe/Vatican +Link Europe/Rome Europe/San_Marino + # Kosovo # See Europe/Belgrade. -Link Europe/Rome Europe/Vatican -Link Europe/Rome Europe/San_Marino - # Latvia # From Liene Kanepe (1998-09-17): @@ -1892,16 +1780,7 @@ 2:00 EU EE%sT # Liechtenstein - -# From Paul Eggert (2013-09-09): -# Shanks & Pottenger say Vaduz is like Zurich. - -# From Alois Treindl (2019-07-04): -# I was able to access the online archive of the Vaduz paper Vaterland ... -# I could confirm from the paper that Liechtenstein did in fact follow -# the same DST in 1941 and 1942 as Switzerland did. - -Link Europe/Zurich Europe/Vaduz +# See Europe/Zurich. # Lithuania @@ -1957,40 +1836,7 @@ 2:00 EU EE%sT # Luxembourg -# Whitman disagrees with most of these dates in minor ways; -# go with Shanks & Pottenger. -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Lux 1916 only - May 14 23:00 1:00 S -Rule Lux 1916 only - Oct 1 1:00 0 - -Rule Lux 1917 only - Apr 28 23:00 1:00 S -Rule Lux 1917 only - Sep 17 1:00 0 - -Rule Lux 1918 only - Apr Mon>=15 2:00s 1:00 S -Rule Lux 1918 only - Sep Mon>=15 2:00s 0 - -Rule Lux 1919 only - Mar 1 23:00 1:00 S -Rule Lux 1919 only - Oct 5 3:00 0 - -Rule Lux 1920 only - Feb 14 23:00 1:00 S -Rule Lux 1920 only - Oct 24 2:00 0 - -Rule Lux 1921 only - Mar 14 23:00 1:00 S -Rule Lux 1921 only - Oct 26 2:00 0 - -Rule Lux 1922 only - Mar 25 23:00 1:00 S -Rule Lux 1922 only - Oct Sun>=2 1:00 0 - -Rule Lux 1923 only - Apr 21 23:00 1:00 S -Rule Lux 1923 only - Oct Sun>=2 2:00 0 - -Rule Lux 1924 only - Mar 29 23:00 1:00 S -Rule Lux 1924 1928 - Oct Sun>=2 1:00 0 - -Rule Lux 1925 only - Apr 5 23:00 1:00 S -Rule Lux 1926 only - Apr 17 23:00 1:00 S -Rule Lux 1927 only - Apr 9 23:00 1:00 S -Rule Lux 1928 only - Apr 14 23:00 1:00 S -Rule Lux 1929 only - Apr 20 23:00 1:00 S -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Luxembourg 0:24:36 - LMT 1904 Jun - 1:00 Lux CE%sT 1918 Nov 25 - 0:00 Lux WE%sT 1929 Oct 6 2:00s - 0:00 Belgium WE%sT 1940 May 14 3:00 - 1:00 C-Eur WE%sT 1944 Sep 18 3:00 - 1:00 Belgium CE%sT 1977 - 1:00 EU CE%sT +# See Europe/Brussels. # North Macedonia # See Europe/Belgrade. @@ -2009,7 +1855,7 @@ Rule Malta 1975 1980 - Sep Sun>=15 2:00 0 - Rule Malta 1980 only - Mar 31 2:00 1:00 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 0:00s # Valletta +Zone Europe/Malta 0:58:04 - LMT 1893 Nov 2 # Valletta 1:00 Italy CE%sT 1973 Mar 31 1:00 Malta CE%sT 1981 1:00 EU CE%sT @@ -2091,126 +1937,16 @@ 2:00 Moldova EE%sT # Monaco -# -# From Michael Deckers (2020-06-12): -# In the "Journal de Monaco" of 1892-05-24, online at -# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/b1c67c12c5af11b41ea888fb048e4fe8.pdf -# we read: ... -# [In virtue of a Sovereign Ordinance of the May 13 of the current [year], -# legal time in the Principality will be set to, from the date of June 1, -# 1892 onwards, to the meridian of Paris, as in France.] -# In the "Journal de Monaco" of 1911-03-28, online at -# https://journaldemonaco.gouv.mc/var/jdm/storage/original/application/de74ffb7db53d4f599059fe8f0ed482a.pdf -# we read an ordinance of 1911-03-16: ... -# [Legal time in the Principality will be set, from the date of promulgation -# of the present ordinance, to legal time in France.... Consequently, legal -# time will be retarded by 9 minutes and 21 seconds.] -# -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Monaco 0:29:32 - LMT 1892 Jun 1 - 0:09:21 - PMT 1911 Mar 29 # Paris Mean Time - 0:00 France WE%sT 1945 Sep 16 3:00 - 1:00 France CE%sT 1977 - 1:00 EU CE%sT +# See Europe/Paris. # Montenegro # See Europe/Belgrade. # Netherlands - -# Howse writes that the Netherlands' railways used GMT between 1892 and 1940, -# but for other purposes the Netherlands used Amsterdam mean time. - -# However, Robert H. van Gent writes (2001-04-01): -# Howse's statement is only correct up to 1909. From 1909-05-01 (00:00:00 -# Amsterdam mean time) onwards, the whole of the Netherlands (including -# the Dutch railways) was required by law to observe Amsterdam mean time -# (19 minutes 32.13 seconds ahead of GMT). This had already been the -# common practice (except for the railways) for many decades but it was -# not until 1909 when the Dutch government finally defined this by law. -# On 1937-07-01 this was changed to 20 minutes (exactly) ahead of GMT and -# was generally known as Dutch Time ("Nederlandse Tijd"). -# -# (2001-04-08): -# 1892-05-01 was the date when the Dutch railways were by law required to -# observe GMT while the remainder of the Netherlands adhered to the common -# practice of following Amsterdam mean time. -# -# (2001-04-09): -# In 1835 the authorities of the province of North Holland requested the -# municipal authorities of the towns and cities in the province to observe -# Amsterdam mean time but I do not know in how many cases this request was -# actually followed. -# -# From 1852 onwards the Dutch telegraph offices were by law required to -# observe Amsterdam mean time. As the time signals from the observatory of -# Leiden were also distributed by the telegraph system, I assume that most -# places linked up with the telegraph (and railway) system automatically -# adopted Amsterdam mean time. -# -# Although the early Dutch railway companies initially observed a variety -# of times, most of them had adopted Amsterdam mean time by 1858 but it -# was not until 1866 when they were all required by law to observe -# Amsterdam mean time. - -# The data entries before 1945 are taken from -# https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm - -# From Paul Eggert (2021-05-09): -# I invented the abbreviations AMT for Amsterdam Mean Time and NST for -# Netherlands Summer Time, used in the Netherlands from 1835 to 1937. - -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Neth 1916 only - May 1 0:00 1:00 NST # Netherlands Summer Time -Rule Neth 1916 only - Oct 1 0:00 0 AMT # Amsterdam Mean Time -Rule Neth 1917 only - Apr 16 2:00s 1:00 NST -Rule Neth 1917 only - Sep 17 2:00s 0 AMT -Rule Neth 1918 1921 - Apr Mon>=1 2:00s 1:00 NST -Rule Neth 1918 1921 - Sep lastMon 2:00s 0 AMT -Rule Neth 1922 only - Mar lastSun 2:00s 1:00 NST -Rule Neth 1922 1936 - Oct Sun>=2 2:00s 0 AMT -Rule Neth 1923 only - Jun Fri>=1 2:00s 1:00 NST -Rule Neth 1924 only - Mar lastSun 2:00s 1:00 NST -Rule Neth 1925 only - Jun Fri>=1 2:00s 1:00 NST -# From 1926 through 1939 DST began 05-15, except that it was delayed by a week -# in years when 05-15 fell in the Pentecost weekend. -Rule Neth 1926 1931 - May 15 2:00s 1:00 NST -Rule Neth 1932 only - May 22 2:00s 1:00 NST -Rule Neth 1933 1936 - May 15 2:00s 1:00 NST -Rule Neth 1937 only - May 22 2:00s 1:00 NST -Rule Neth 1937 only - Jul 1 0:00 1:00 S -Rule Neth 1937 1939 - Oct Sun>=2 2:00s 0 - -Rule Neth 1938 1939 - May 15 2:00s 1:00 S -Rule Neth 1945 only - Apr 2 2:00s 1:00 S -Rule Neth 1945 only - Sep 16 2:00s 0 - -# -# Amsterdam Mean Time was +00:19:32.13, but the .13 is omitted -# below because the current format requires STDOFF to be an integer. -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Amsterdam 0:19:32 - LMT 1835 - 0:19:32 Neth %s 1937 Jul 1 - 0:20 Neth +0020/+0120 1940 May 16 0:00 - 1:00 C-Eur CE%sT 1945 Apr 2 2:00 - 1:00 Neth CE%sT 1977 - 1:00 EU CE%sT +# See Europe/Brussels. # Norway -# http://met.no/met/met_lex/q_u/sommertid.html (2004-01) agrees with Shanks & -# Pottenger. -# Rule NAME FROM TO - IN ON AT SAVE LETTER/S -Rule Norway 1916 only - May 22 1:00 1:00 S -Rule Norway 1916 only - Sep 30 0:00 0 - -Rule Norway 1945 only - Apr 2 2:00s 1:00 S -Rule Norway 1945 only - Oct 1 2:00s 0 - -Rule Norway 1959 1964 - Mar Sun>=15 2:00s 1:00 S -Rule Norway 1959 1965 - Sep Sun>=15 2:00s 0 - -Rule Norway 1965 only - Apr 25 2:00s 1:00 S -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Oslo 0:43:00 - LMT 1895 Jan 1 - 1:00 Norway CE%sT 1940 Aug 10 23:00 - 1:00 C-Eur CE%sT 1945 Apr 2 2:00 - 1:00 Norway CE%sT 1980 - 1:00 EU CE%sT +# See Europe/Berlin. # Svalbard & Jan Mayen @@ -2257,9 +1993,9 @@ # the German armed forces at the Svalbard weather station code-named # Haudegen did not surrender to the Allies until September 1945. # -# All these events predate our cutoff date of 1970, so use Europe/Oslo +# All these events predate our cutoff date of 1970, so use Europe/Berlin # for these regions. -Link Europe/Oslo Arctic/Longyearbyen + # Poland @@ -2313,7 +2049,6 @@ # According to a Portuguese decree (1911-05-26) # https://dre.pt/application/dir/pdf1sdip/1911/05/12500/23132313.pdf # Lisbon was at -0:36:44.68, but switched to GMT on 1912-01-01 at 00:00. -# Round the old offset to -0:36:45. This agrees with Willett.... # # From Michael Deckers (2018-02-15): # article 5 [of the 1911 decree; Deckers's translation] ...: @@ -2400,6 +2135,7 @@ Rule Port 1983 only - Mar lastSun 2:00s 1:00 S # # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -0:36:44.68 Zone Europe/Lisbon -0:36:45 - LMT 1884 -0:36:45 - LMT 1912 Jan 1 0:00u # Lisbon MT 0:00 Port WE%sT 1966 Apr 3 2:00 @@ -2408,9 +2144,13 @@ 0:00 W-Eur WE%sT 1992 Sep 27 1:00s 1:00 EU CE%sT 1996 Mar 31 1:00u 0:00 EU WE%sT -# This Zone can be simplified once we assume zic %z. Zone Atlantic/Azores -1:42:40 - LMT 1884 # Ponta Delgada -1:54:32 - HMT 1912 Jan 1 2:00u # Horta MT +# Vanguard section, for zic and other parsers that support %z. +# -2:00 Port %z 1966 Apr 3 2:00 +# -1:00 Port %z 1983 Sep 25 1:00s +# -1:00 W-Eur %z 1992 Sep 27 1:00s +# Rearguard section, for parsers lacking %z; see ziguard.awk. -2:00 Port -02/-01 1942 Apr 25 22:00s -2:00 Port +00 1942 Aug 15 22:00s -2:00 Port -02/-01 1943 Apr 17 22:00s @@ -2422,11 +2162,14 @@ -2:00 Port -02/-01 1966 Apr 3 2:00 -1:00 Port -01/+00 1983 Sep 25 1:00s -1:00 W-Eur -01/+00 1992 Sep 27 1:00s +# End of rearguard section. 0:00 EU WE%sT 1993 Mar 28 1:00u -1:00 EU -01/+00 -# This Zone can be simplified once we assume zic %z. Zone Atlantic/Madeira -1:07:36 - LMT 1884 # Funchal -1:07:36 - FMT 1912 Jan 1 1:00u # Funchal MT +# Vanguard section, for zic and other parsers that support %z. +# -1:00 Port %z 1966 Apr 3 2:00 +# Rearguard section, for parsers lacking %z; see ziguard.awk. -1:00 Port -01/+00 1942 Apr 25 22:00s -1:00 Port +01 1942 Aug 15 22:00s -1:00 Port -01/+00 1943 Apr 17 22:00s @@ -2436,6 +2179,7 @@ -1:00 Port -01/+00 1945 Apr 21 22:00s -1:00 Port +01 1945 Aug 25 22:00s -1:00 Port -01/+00 1966 Apr 3 2:00 +# End of rearguard section. 0:00 Port WE%sT 1983 Sep 25 1:00s 0:00 EU WE%sT @@ -2854,20 +2598,19 @@ 2:00 - EET 1992 Mar 20 # Central Crimea used Moscow time 1994/1997. # -# From Paul Eggert (2006-03-22): -# The _Economist_ (1994-05-28, p 45) reports that central Crimea switched -# from Kiev to Moscow time sometime after the January 1994 elections. +# From Paul Eggert (2022-07-21): +# The _Economist_ (1994-05-28, p 45) reported that central Crimea switched +# from Kyiv to Moscow time sometime after the January 1994 elections. # Shanks (1999) says "date of change uncertain", but implies that it happened # sometime between the 1994 DST switches. Shanks & Pottenger simply say # 1994-09-25 03:00, but that can't be right. For now, guess it -# changed in May. +# changed in May. This change evidently didn't last long; see below. 2:00 C-Eur EE%sT 1994 May -# From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev. - 3:00 E-Eur MSK/MSD 1996 Mar 31 0:00s +# From IATA SSIM (1994/1997), which also said that Kerch is still like Kyiv. + 3:00 C-Eur MSK/MSD 1996 Mar 31 0:00s 3:00 1:00 MSD 1996 Oct 27 3:00s -# IATA SSIM (1997-09) says Crimea switched to EET/EEST. +# IATA SSIM (1997-09) said Crimea switched to EET/EEST. # Assume it happened in March by not changing the clocks. - 3:00 Russia MSK/MSD 1997 3:00 - MSK 1997 Mar lastSun 1:00u # From Alexander Krivenyshev (2014-03-17): # time change at 2:00 (2am) on March 30, 2014 @@ -3036,11 +2779,12 @@ # Note: Effective 2005-12-01, (59) Perm Oblast and (81) Komi-Permyak # Autonomous Okrug merged to form (90, RU-PER) Perm Krai. -# Milne says Yekaterinburg was 4:02:32.9; round to nearest. +# Milne says Yekaterinburg was 4:02:32.9. # Byalokoz 1919 says its provincial time was based on Perm, at 3:45:05. # Assume it switched on 1916-07-03, the time of the new standard. # The 1919 and 1930 transitions are from Shanks. + #STDOFF 4:02:32.9 Zone Asia/Yekaterinburg 4:02:33 - LMT 1916 Jul 3 3:45:05 - PMT 1919 Jul 15 4:00 4:00 - +04 1930 Jun 21 @@ -3352,8 +3096,8 @@ # 14-28 **** Tomponsky District # 14-30 **** Ust-Maysky District -# From Arthur David Olson (2012-05-09): -# Tomponskij and Ust'-Majskij switched from Vladivostok time to Yakutsk time +# From Arthur David Olson (2022-03-21): +# Tomponsky and Ust-Maysky switched from Vladivostok time to Yakutsk time # in 2011. # From Paul Eggert (2012-11-25): @@ -3478,8 +3222,8 @@ # Asia/Ust-Nera covers parts of (14, RU-SA) Sakha (Yakutia) Republic: # 14-22 **** Oymyakonsky District -# From Arthur David Olson (2012-05-09): -# Ojmyakonskij [and the Kuril Islands] switched from +# From Arthur David Olson (2022-03-21): +# Oymyakonsky and the Kuril Islands switched from # Magadan time to Vladivostok time in 2011. # # From Tim Parenti (2014-07-06), per Alexander Krivenyshev (2014-07-02): @@ -3553,7 +3297,7 @@ Link Europe/Belgrade Europe/Zagreb # Croatia # Slovakia -Link Europe/Prague Europe/Bratislava +# See Europe/Prague. # Slovenia # See Europe/Belgrade. @@ -3642,7 +3386,7 @@ Rule SpainAfrica 1978 only - Jun 1 0:00 1:00 S Rule SpainAfrica 1978 only - Aug 4 0:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Madrid -0:14:44 - LMT 1900 Dec 31 23:45:16 +Zone Europe/Madrid -0:14:44 - LMT 1901 Jan 1 0:00u 0:00 Spain WE%sT 1940 Mar 16 23:00 1:00 Spain CE%sT 1979 1:00 EU CE%sT @@ -3664,61 +3408,7 @@ # Ignore this for now, as the Canaries are part of the EU. # Sweden - -# From Ivan Nilsson (2001-04-13), superseding Shanks & Pottenger: -# -# The law "Svensk författningssamling 1878, no 14" about standard time in 1879: -# From the beginning of 1879 (that is 01-01 00:00) the time for all -# places in the country is "the mean solar time for the meridian at -# three degrees, or twelve minutes of time, to the west of the -# meridian of the Observatory of Stockholm". The law is dated 1878-05-31. -# -# The observatory at that time had the meridian 18° 03' 30" -# eastern longitude = 01:12:14 in time. Less 12 minutes gives the -# national standard time as 01:00:14 ahead of GMT.... -# -# About the beginning of CET in Sweden. The lawtext ("Svensk -# författningssamling 1899, no 44") states, that "from the beginning -# of 1900... ... the same as the mean solar time for the meridian at -# the distance of one hour of time from the meridian of the English -# observatory at Greenwich, or at 12 minutes 14 seconds to the west -# from the meridian of the Observatory of Stockholm". The law is dated -# 1899-06-16. In short: At 1900-01-01 00:00:00 the new standard time -# in Sweden is 01:00:00 ahead of GMT. -# -# 1916: The lawtext ("Svensk författningssamling 1916, no 124") states -# that "1916-05-15 is considered to begin one hour earlier". It is -# pretty obvious that at 05-14 23:00 the clocks are set to 05-15 00:00.... -# Further the law says, that "1916-09-30 is considered to end one hour later". -# -# The laws regulating [DST] are available on the site of the Swedish -# Parliament beginning with 1985 - the laws regulating 1980/1984 are -# not available on the site (to my knowledge they are only available -# in Swedish): (type -# "sommartid" without the quotes in the field "Fritext" and then click -# the Sök-button). -# -# (2001-05-13): -# -# I have now found a newspaper stating that at 1916-10-01 01:00 -# summertime the church-clocks etc were set back one hour to show -# 1916-10-01 00:00 standard time. The article also reports that some -# people thought the switch to standard time would take place already -# at 1916-10-01 00:00 summer time, but they had to wait for another -# hour before the event took place. -# -# Source: The newspaper "Dagens Nyheter", 1916-10-01, page 7 upper left. - -# An extra-special abbreviation style is SET for Swedish Time (svensk -# normaltid) 1879-1899, 3° west of the Stockholm Observatory. - -# Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone Europe/Stockholm 1:12:12 - LMT 1879 Jan 1 - 1:00:14 - SET 1900 Jan 1 # Swedish Time - 1:00 - CET 1916 May 14 23:00 - 1:00 1:00 CEST 1916 Oct 1 1:00 - 1:00 - CET 1980 - 1:00 EU CE%sT +# See Europe/Berlin. # Switzerland # From Howse: @@ -3812,6 +3502,19 @@ # 1853-07-16, though it probably occurred at some other date in Zurich, and # legal civil time probably changed at still some other transition date. +# From Tobias Conradi (2011-09-12): +# Büsingen , surrounded by the Swiss canton +# Schaffhausen, did not start observing DST in 1980 as the rest of DE +# (West Germany at that time) and DD (East Germany at that time) did. +# DD merged into DE, the area is currently covered by code DE in ISO 3166-1, +# which in turn is covered by the zone Europe/Berlin. +# +# Source for the time in Büsingen 1980: +# http://www.srf.ch/player/video?id=c012c029-03b7-4c2b-9164-aa5902cd58d3 +# +# From Arthur David Olson (2012-03-03): +# Büsingen and Zurich have shared clocks since 1970. + # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 - @@ -3820,6 +3523,9 @@ 0:29:46 - BMT 1894 Jun # Bern Mean Time 1:00 Swiss CE%sT 1981 1:00 EU CE%sT +Link Europe/Zurich Europe/Busingen +Link Europe/Zurich Europe/Vaduz + # Turkey @@ -4028,7 +3734,7 @@ # Ukraine # -# From Alois Triendl (2014-03-01): +# From Alois Treindl (2014-03-01): # REGULATION A N O V A on March 20, 1992 N 139 ... means that from # 1992 on, Ukraine had DST with begin time at 02:00 am, on last Sunday # in March, and end time 03:00 am, last Sunday in September.... @@ -4088,7 +3794,7 @@ # The law documents themselves are at # http://w1.c1.rada.gov.ua/pls/zweb_n/webproc4_1?id=&pf3511=41484 -# From Vladimir in Moscow via Alois Treindl re Kiev time 1991/2 (2014-02-28): +# From Vladimir in Moscow via Alois Treindl re Kyiv time 1991/2 (2014-02-28): # First in Ukraine they changed Time zone from UTC+3 to UTC+2 with DST: # 03 25 1990 02:00 -03.00 1 Time Zone 3 with DST # 07 01 1990 02:00 -02.00 1 Time Zone 2 with DST @@ -4116,23 +3822,23 @@ # * Ukrainian Government's Resolution of 20.03.1992, No. 139. # http://www.uazakon.com/documents/date_8u/pg_grcasa.htm -# From Paul Eggert (2018-10-03): +# From Paul Eggert (2022-04-12): # As is usual in tzdb, Ukrainian zones use the most common English spellings. -# For example, tzdb uses Europe/Kiev, as "Kiev" is the most common spelling in -# English for Ukraine's capital, even though it is certainly wrong as a -# transliteration of the Ukrainian "Київ". This is similar to tzdb's use of -# Europe/Prague, which is certainly wrong as a transliteration of the Czech -# "Praha". ("Kiev" came from old Slavic via Russian to English, and "Prague" -# came from old Slavic via French to English, so the two cases have something -# in common.) Admittedly English-language spelling of Ukrainian names is -# controversial, and some day "Kyiv" may become substantially more popular in -# English; in the meantime, stick with the traditional English "Kiev" as that -# means less disruption for our users. +# In particular, tzdb's name Europe/Kyiv uses the most common spelling in +# English for Ukraine's capital. Although tzdb's former name was Europe/Kiev, +# "Kyiv" is now more common due to widespread reporting of the current conflict. +# Conversely, tzdb continues to use the names Europe/Uzhgorod and +# Europe/Zaporozhye; this is similar to tzdb's use of Europe/Prague, which is +# certainly wrong as a transliteration of the Czech "Praha". +# English-language spelling of Ukrainian names is in flux, and +# some day "Uzhhorod" or "Zaporizhzhia" may become substantially more +# common in English; in the meantime, do not change these +# English spellings as that means less disruption for our users. # Zone NAME STDOFF RULES FORMAT [UNTIL] -# This represents most of Ukraine. See above for the spelling of "Kiev". -Zone Europe/Kiev 2:02:04 - LMT 1880 - 2:02:04 - KMT 1924 May 2 # Kiev Mean Time +# This represents most of Ukraine. See above for the spelling of "Kyiv". +Zone Europe/Kyiv 2:02:04 - LMT 1880 + 2:02:04 - KMT 1924 May 2 # Kyiv Mean Time 2:00 - EET 1930 Jun 21 3:00 - MSK 1941 Sep 20 1:00 C-Eur CE%sT 1943 Nov 6 @@ -4155,7 +3861,7 @@ 2:00 C-Eur EE%sT 1996 May 13 2:00 EU EE%sT # Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991. -# "Zaporizhia" is the transliteration of the Ukrainian name, but +# "Zaporizhzhia" is the transliteration of the Ukrainian name, but # "Zaporozh'ye" is more common in English. Use the common English # spelling, except omit the apostrophe as it is not allowed in # portable Posix file names. --- contrib/tzdata/leap-seconds.list.orig +++ contrib/tzdata/leap-seconds.list @@ -204,10 +204,10 @@ # current -- the update time stamp, the data and the name of the file # will not change. # -# Updated through IERS Bulletin C63 -# File expires on: 28 December 2022 +# Updated through IERS Bulletin C64 +# File expires on: 28 June 2023 # -#@ 3881174400 +#@ 3896899200 # 2272060800 10 # 1 Jan 1972 2287785600 11 # 1 Jul 1972 @@ -252,4 +252,4 @@ # the hash line is also ignored in the # computation. # -#h 732b2044 5863a938 b7e43179 1339c710 ded63837 +#h 2c413af9 124e1031 f165174 ff527c6b 756ae00b --- contrib/tzdata/leapseconds.orig +++ contrib/tzdata/leapseconds @@ -72,11 +72,11 @@ # Any additional leap seconds will come after this. # This Expires line is commented out for now, # so that pre-2020a zic implementations do not reject this file. -#Expires 2022 Dec 28 00:00:00 +#Expires 2023 Jun 28 00:00:00 # POSIX timestamps for the data in this file: #updated 1467936000 (2016-07-08 00:00:00 UTC) -#expires 1672185600 (2022-12-28 00:00:00 UTC) +#expires 1687910400 (2023-06-28 00:00:00 UTC) -# Updated through IERS Bulletin C63 -# File expires on: 28 December 2022 +# Updated through IERS Bulletin C64 +# File expires on: 28 June 2023 --- contrib/tzdata/northamerica.orig +++ contrib/tzdata/northamerica @@ -344,8 +344,7 @@ # From Paul Eggert (2014-09-06): # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208 # says that New York City Hall time was 3 minutes 58.4 seconds fast of -# Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the -# nearest second. +# Eastern time (i.e., -4:56:01.6) just before the 1883 switch. # Rule NAME FROM TO - IN ON AT SAVE LETTER Rule NYC 1920 only - Mar lastSun 2:00 1:00 D @@ -354,7 +353,8 @@ Rule NYC 1921 1954 - Sep lastSun 2:00 0 S Rule NYC 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] -Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 + #STDOFF -4:56:01.6 +Zone America/New_York -4:56:02 - LMT 1883 Nov 18 17:00u -5:00 US E%sT 1920 -5:00 NYC E%sT 1942 -5:00 US E%sT 1946 @@ -2818,7 +2818,7 @@ # Barbados -# For 1899 Milne gives -3:58:29.2; round that. +# For 1899 Milne gives -3:58:29.2. # From P Chan (2020-12-09 and 2020-12-11): # Standard time of GMT-4 was adopted in 1911. @@ -2862,6 +2862,7 @@ Rule Barb 1979 only - Sep 30 2:00 0 S Rule Barb 1980 only - Sep 25 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -3:58:29.2 Zone America/Barbados -3:58:29 - LMT 1911 Aug 28 # Bridgetown -4:00 Barb A%sT 1944 -4:00 Barb AST/-0330 1945 @@ -2922,10 +2923,10 @@ # Bermuda -# From Paul Eggert (2020-11-24): +# From Paul Eggert (2022-07-27): # For 1899 Milne gives -4:19:18.3 as the meridian of the clock tower, # Bermuda dockyard, Ireland I. This agrees with standard offset given in the -# Daylight Saving Act, 1917 cited below. Round that to the nearest second. +# Daylight Saving Act, 1917 cited below. # It is not known when this time became standard for Bermuda; guess 1890. # The transition to -04 was specified by: # 1930: The Time Zone Act, 1929 (1929: No. 39) [1929-11-08] @@ -3020,6 +3021,7 @@ Rule Bermuda 1956 only - Oct lastSun 2:00 0 S # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -4:19:18.3 Zone Atlantic/Bermuda -4:19:18 - LMT 1890 # Hamilton -4:19:18 Bermuda BMT/BST 1930 Jan 1 2:00 -4:00 Bermuda A%sT 1974 Apr 28 2:00 @@ -3034,7 +3036,7 @@ # Costa Rica -# Milne gives -5:36:13.3 as San José mean time; round to nearest. +# Milne gives -5:36:13.3 as San José mean time. # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule CR 1979 1980 - Feb lastSun 0:00 1:00 D @@ -3046,6 +3048,7 @@ Rule CR 1992 only - Mar 15 0:00 0 S # There are too many San Josés elsewhere, so we'll use 'Costa Rica'. # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -5:36:13.3 Zone America/Costa_Rica -5:36:13 - LMT 1890 # San José -5:36:13 - SJMT 1921 Jan 15 # San José Mean Time -6:00 CR C%sT @@ -3468,7 +3471,7 @@ # Jamaica # Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an # unspecified official document, and says "This time is used throughout the -# island". Go with Milne. Round to the nearest second as required by zic. +# island". Go with Milne. # # Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but # Lance Neita writes that Prime Minister Michael Manley decreed it January 5. @@ -3481,6 +3484,7 @@ # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647 # # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -5:07:10.41 Zone America/Jamaica -5:07:10 - LMT 1890 # Kingston -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1974 @@ -3678,6 +3682,7 @@ # Zone NAME STDOFF RULES FORMAT [UNTIL] Zone America/Grand_Turk -4:44:32 - LMT 1890 + #STDOFF -5:07:10.41 -5:07:10 - KMT 1912 Feb # Kingston Mean Time -5:00 - EST 1979 -5:00 US E%sT 2015 Mar 8 2:00 --- contrib/tzdata/southamerica.orig +++ contrib/tzdata/southamerica @@ -400,6 +400,7 @@ # # Buenos Aires (BA), Capital Federal (CF), Zone America/Argentina/Buenos_Aires -3:53:48 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May # Córdoba Mean Time -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -417,6 +418,7 @@ # - Santiago del Estero switched to -4:00 on 1991-04-01, # then to -3:00 on 1991-04-26. # + #STDOFF -4:16:48.25 Zone America/Argentina/Cordoba -4:16:48 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec @@ -429,6 +431,7 @@ # # Salta (SA), La Pampa (LP), Neuquén (NQ), Rio Negro (RN) Zone America/Argentina/Salta -4:21:40 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -441,6 +444,7 @@ # # Tucumán (TM) Zone America/Argentina/Tucuman -4:20:52 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -454,6 +458,7 @@ # # La Rioja (LR) Zone America/Argentina/La_Rioja -4:27:24 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -468,6 +473,7 @@ # # San Juan (SJ) Zone America/Argentina/San_Juan -4:34:04 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -482,6 +488,7 @@ # # Jujuy (JY) Zone America/Argentina/Jujuy -4:21:12 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -497,6 +504,7 @@ # # Catamarca (CT), Chubut (CH) Zone America/Argentina/Catamarca -4:23:08 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -511,6 +519,7 @@ # # Mendoza (MZ) Zone America/Argentina/Mendoza -4:35:16 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -533,6 +542,7 @@ Rule SanLuis 2007 2008 - Oct Sun>=8 0:00 1:00 - Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -551,6 +561,7 @@ # # Santa Cruz (SC) Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -563,6 +574,7 @@ # # Tierra del Fuego, Antártida e Islas del Atlántico Sur (TF) Zone America/Argentina/Ushuaia -4:33:12 - LMT 1894 Oct 31 + #STDOFF -4:16:48.25 -4:16:48 - CMT 1920 May -4:00 - -04 1930 Dec -4:00 Arg -04/-03 1969 Oct 5 @@ -645,7 +657,7 @@ # From Rodrigo Severo (2004-10-04): # It's just the biannual change made necessary by the much hyped, supposedly -# modern Brazilian eletronic voting machines which, apparently, can't deal +# modern Brazilian ... voting machines which, apparently, can't deal # with a time change between the first and the second rounds of the elections. # From Steffen Thorsen (2007-09-20): @@ -1141,7 +1153,7 @@ # this is known to work for DST transitions starting in 2008 and # may well be true for earlier transitions. -# From Tim Parenti (2022-03-15): +# From Tim Parenti (2022-07-06): # For a brief period of roughly six weeks in 1946, DST was only observed on an # emergency basis in specific regions of central Chile; namely, "the national # territory between the provinces of Coquimbo and Concepción, inclusive". @@ -1159,7 +1171,14 @@ # Law Number 8,522, promulgated 1946-08-27, reunified Chilean clocks at their # new "Summer Time" of -04, reckoned as that of "the meridian of the # Astronomical Observatory of Lo Espejo, advanced by 42 minutes and 45 -# seconds". +# seconds". Although this law specified the new Summer Time to start on 1 +# September each year, a special "transitional article" started it a few days +# early, as soon as the law took effect. As the law was to take force "from +# the date of its publication in the 'Diario Oficial', which happened the +# following day, presume the change took place in Santiago and its environs +# from 24:00 -03 to 23:00 -04 on Wednesday 1946-08-28. Although this was a +# no-op for wall clocks in the north and south of the country, put their formal +# start to DST an hour later when they reached 24:00 -04. # https://www.diariooficial.interior.gob.cl/versiones-anteriores/do-h/19460828/#page/1 # After a brief "Winter Time" stint at -05 beginning 1947-04-01, Law Number # 8,777, promulgated 1947-05-17, established year-round -04 "from 23:00 on the @@ -1279,11 +1298,19 @@ # So we extend the new rules on Saturdays at 24:00 mainland time indefinitely. # From Juan Correa (2019-02-04): # http://www.diariooficial.interior.gob.cl/publicaciones/2018/11/23/42212/01/1498738.pdf -# From Paul Eggert (2019-09-01): -# The above says the Magallanes exception expires 2022-04-02 at 24:00, -# so in theory, they will revert to -04/-03 after that. -# For now, assume that they will not revert, -# since they have extended the expiration date once already. + +# From Juan Correa (2022-04-02): +# I found there was a decree published last Thursday that will keep +# Magallanes region to UTC -3 "indefinitely". The decree is available at +# https://www.diariooficial.interior.gob.cl/publicaciones/2022/03/31/43217-B/01/2108910.pdf + +# From Juan Correa (2022-08-09): +# the Internal Affairs Ministry (Ministerio del Interior) informed DST +# for America/Santiago will start on midnight of September 11th; +# and will end on April 1st, 2023. Magallanes region (America/Punta_Arenas) +# will keep UTC -3 "indefinitely"... This is because on September 4th +# we will have a voting whether to approve a new Constitution.... +# https://www.interior.gob.cl/noticias/2022/08/09/comunicado-el-proximo-sabado-10-de-septiembre-los-relojes-se-deben-adelantar-una-hora/ # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule Chile 1927 1931 - Sep 1 0:00 1:00 - @@ -1321,7 +1348,9 @@ Rule Chile 2016 2018 - May Sun>=9 3:00u 0 - Rule Chile 2016 2018 - Aug Sun>=9 4:00u 1:00 - Rule Chile 2019 max - Apr Sun>=2 3:00u 0 - -Rule Chile 2019 max - Sep Sun>=2 4:00u 1:00 - +Rule Chile 2019 2021 - Sep Sun>=2 4:00u 1:00 - +Rule Chile 2022 only - Sep Sun>=9 4:00u 1:00 - +Rule Chile 2023 max - Sep Sun>=2 4:00u 1:00 - # IATA SSIM anomalies: (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these. # Zone NAME STDOFF RULES FORMAT [UNTIL] @@ -1334,9 +1363,9 @@ -5:00 Chile -05/-04 1932 Sep 1 -4:00 - -04 1942 Jun 1 -5:00 - -05 1942 Aug 1 - -4:00 - -04 1946 Jul 15 - -4:00 1:00 -03 1946 Sep 1 # central Chile - -4:00 - -04 1947 Apr 1 + -4:00 - -04 1946 Jul 14 24:00 + -4:00 1:00 -03 1946 Aug 28 24:00 # central CL + -5:00 1:00 -04 1947 Mar 31 24:00 -5:00 - -05 1947 May 21 23:00 -4:00 Chile -04/-03 Zone America/Punta_Arenas -4:43:40 - LMT 1890 @@ -1348,7 +1377,8 @@ -5:00 Chile -05/-04 1932 Sep 1 -4:00 - -04 1942 Jun 1 -5:00 - -05 1942 Aug 1 - -4:00 - -04 1947 Apr 1 + -4:00 - -04 1946 Aug 28 24:00 + -5:00 1:00 -04 1947 Mar 31 24:00 -5:00 - -05 1947 May 21 23:00 -4:00 Chile -04/-03 2016 Dec 4 -3:00 - -03 @@ -1382,13 +1412,14 @@ # Colombia -# Milne gives 4:56:16.4 for Bogotá time in 1899; round to nearest. He writes, +# Milne gives 4:56:16.4 for Bogotá time in 1899. He writes, # "A variation of fifteen minutes in the public clocks of Bogota is not rare." # Rule NAME FROM TO - IN ON AT SAVE LETTER/S Rule CO 1992 only - May 3 0:00 1:00 - Rule CO 1993 only - Apr 4 0:00 0 - # Zone NAME STDOFF RULES FORMAT [UNTIL] + #STDOFF -4:56:16.4 Zone America/Bogota -4:56:16 - LMT 1884 Mar 13 -4:56:16 - BMT 1914 Nov 23 # Bogotá Mean Time -5:00 CO -05/-04 --- contrib/tzdata/theory.html.orig +++ contrib/tzdata/theory.html @@ -122,7 +122,7 @@ locate the user on a timezone map or prioritize names that are geographically close. For an example selection interface, see the tzselect program in the tz code. -The Unicode Common Locale Data +The Unicode Common Locale Data Repository contains data that may be useful for other selection interfaces; it maps timezone names like Europe/Prague to locale-dependent strings like "Prague", "Praha", "Прага", and "布拉格". @@ -376,9 +376,11 @@ on platforms that do not support POSIX-style TZ strings; no other source file other than backward contains links to its zones. -One of etcetera's names is GMT, +One of etcetera's names is Etc/UTC, used by functions like gmtime to obtain leap second information on platforms that support leap seconds. +Another etcetera name, GMT, +is used by older code releases.

@@ -468,6 +470,7 @@ PST/PDT Philippine, SAST South Africa, SST Samoa, + UTC Universal, WAT/WAST West Africa, WET/WEST/WEMT Western European, WIB Waktu Indonesia Barat, @@ -502,7 +505,7 @@ HMT Havana, Helsinki, Horta, Howrah; IMT Irkutsk, Istanbul; JMT Jerusalem; - KMT Kaunas, Kiev, Kingston; + KMT Kaunas, Kyiv, Kingston; LMT Lima, Lisbon, local, Luanda; MMT Macassar, Madras, Malé, Managua, Minsk, Monrovia, Montevideo, Moratuwa, Moscow; @@ -568,7 +571,7 @@ locations while uninhabited. The leading '-' is a flag that the UT offset is in some sense undefined; this notation is derived - from Internet + from Internet RFC 3339. @@ -621,7 +624,7 @@ should be observed. In her 2015 book The + href="https://www.hup.harvard.edu/catalog.php?isbn=9780674286146">The Global Transformation of Time, 1870–1950, Vanessa Ogle writes "Outside of Europe and North America there was no system of time @@ -720,8 +723,8 @@ than what the tz code can handle. For example, from 1880 to 1916 clocks in Ireland observed Dublin Mean Time (estimated to be UT - −00:25:21.1), but the tz - code cannot represent the fractional second. + −00:25:21.1); although the tz + source data can represent the .1 second, TZif files and the code cannot. In practice these old specifications were rarely if ever implemented to subsecond precision. @@ -807,7 +810,7 @@ See: Stephenson FR, Morrison LV, Hohenkerk CY. Measurement of the Earth's rotation: 720 BC to AD 2015. - Proc Royal Soc A. 2016 Dec 7;472:20160404. + Proc Royal Soc A. 2016;472:20160404. Also see: Espenak F. Uncertainty in Delta T (ΔT). @@ -1033,7 +1036,7 @@ and numeric data as described above. The file's format is TZif, a timezone information format that contains binary data; see - Internet + Internet RFC 8536. The daylight saving time rules to be used for a particular timezone are encoded in the @@ -1061,11 +1064,12 @@
  • The code supports platforms with a UT offset member - in struct tm, e.g., tm_gmtoff. -
    • -
  • - The code supports platforms with a time zone abbreviation member in - struct tm, e.g., tm_zone. + in struct tm, e.g., tm_gmtoff, + or with a time zone abbreviation member in + struct tm, e.g., tm_zone. As noted + in Austin + Group defect 1533, a future version of POSIX is planned to + require tm_gmtoff and tm_zone.
  • Functions tzalloc, tzfree, @@ -1126,7 +1130,8 @@ APIs. Although it can still be used in arguments to mktime to disambiguate timestamps near - a DST transition when the clock jumps back, this + a DST transition when the clock jumps back on + platforms lacking tm_gmtoff, this disambiguation does not work when standard time itself jumps back, which can occur when a location changes to a time zone with a lesser UT offset. @@ -1274,7 +1279,7 @@ Precision timekeeping, and this package by default installs a leapseconds file commonly used by -NTP +NTP software that adjusts the kernel clock. However, kernel-clock twiddling approximates UTC only roughly, and systems needing more-precise UTC can use this package's leap @@ -1295,7 +1300,8 @@ if no time zone correction is desired, calls to gmtime-like functions also need to consult a TZif file, -conventionally named GMT, +conventionally named Etc/UTC +(GMT in previous versions), to see whether leap second corrections are needed. To convert an application's time_t timestamps to or from POSIX time_t timestamps (for use when, say, --- contrib/tzdata/version.orig +++ contrib/tzdata/version @@ -1 +1 @@ -2022a +2022c --- contrib/tzdata/ziguard.awk.orig +++ contrib/tzdata/ziguard.awk @@ -9,7 +9,11 @@ # it does not do these nonessential tasks now. # # Although main and vanguard forms are currently equivalent, -# this need not always be the case. +# this need not always be the case. When the two forms differ, +# this script can convert either from main to vanguard form (needed then), +# or from vanguard to main form (this conversion would be needed later, +# after main became rearguard and vanguard became main). +# There is no need to convert rearguard to other forms. # # When converting to vanguard form, the output can use negative SAVE # values. @@ -19,26 +23,82 @@ # of the input data as best it can within the constraints of the # rearguard format. +# Given a FIELD like "-0:30", return a minute count like -30. +function get_minutes(field, \ + sign, hours, minutes) +{ + sign = field ~ /^-/ ? -1 : 1 + hours = +field + if (field ~ /:/) { + minutes = field + sub(/[^:]*:/, "", minutes) + } + return 60 * hours + sign * minutes +} + +# Given an OFFSET, which is a minute count like 300 or 330, +# return a %z-style abbreviation like "+05" or "+0530". +function offset_abbr(offset, \ + hours, minutes, sign) +{ + hours = int(offset / 60) + minutes = offset % 60 + if (minutes) { + return sprintf("%+.4d", hours * 100 + minutes); + } else { + return sprintf("%+.2d", hours) + } +} + +# Round TIMESTAMP (a +-hh:mm:ss.dddd string) to the nearest second. +function round_to_second(timestamp, \ + hh, mm, ss, seconds, dot_dddd, subseconds) +{ + dot_dddd = timestamp + if (!sub(/^[+-]?[0-9]+:[0-9]+:[0-9]+\./, ".", dot_dddd)) + return timestamp + hh = mm = ss = timestamp + sub(/^[-+]?[0-9]+:[0-9]+:/, "", ss) + sub(/^[-+]?[0-9]+:/, "", mm) + sub(/^[-+]?/, "", hh) + seconds = 3600 * hh + 60 * mm + ss + subseconds = +dot_dddd + seconds += 0.5 < subseconds || ((subseconds == 0.5) && (seconds % 2)); + return sprintf("%s%d:%.2d:%.2d", timestamp ~ /^-/ ? "-" : "", \ + seconds / 3600, seconds / 60 % 60, seconds % 60) +} + BEGIN { dataform_type["vanguard"] = 1 dataform_type["main"] = 1 dataform_type["rearguard"] = 1 + if (PACKRATLIST) { + while (getline =8 25:00" - # to "Sun>=9 1:00", to cater to zic before 2007 and to older Java. - if (!vanguard && $1 == "Rule" && $7 == "Sat>=8" && $8 == "25:00") { - sub(/Sat>=8/, "Sun>=9") - sub(/25:00/, " 1:00") + # Prefer %z in vanguard form, explicit abbreviations otherwise. + if (DATAFORM == "vanguard") { + sub(/^(Zone[\t ]+[^\t ]+)?[\t ]+[^\t ]+[\t ]+[^\t ]+[\t ]+[-+][^\t ]+/, \ + "&CHANGE-TO-%z") + sub(/-00CHANGE-TO-%z/, "-00") + sub(/[-+][^\t ]+CHANGE-TO-/, "") + } else { + if ($0 ~ /^[^#]*%z/) { + stdoff_column = 2 * ($0 ~ /^Zone/) + 1 + rules_column = stdoff_column + 1 + stdoff = get_minutes($stdoff_column) + rules = $rules_column + stdabbr = offset_abbr(stdoff) + if (rules == "-") { + abbr = stdabbr + } else { + dstabbr_only = rules ~ /^[+0-9-]/ + if (dstabbr_only) { + dstoff = get_minutes(rules) + } else { + # The DST offset is normally an hour, but there are special cases. + if (rules == "Morocco" && NF == 3) { + dstoff = -60 + } else if (rules == "NBorneo") { + dstoff = 20 + } else if (((rules == "Cook" || rules == "LH") && NF == 3) \ + || (rules == "Uruguay" \ + && $0 ~ /[\t ](1942 Dec 14|1960|1970|1974 Dec 22)$/)) { + dstoff = 30 + } else if (rules == "Uruguay" && $0 ~ /[\t ]1974 Mar 10$/) { + dstoff = 90 + } else { + dstoff = 60 + } + } + dstabbr = offset_abbr(stdoff + dstoff) + if (dstabbr_only) { + abbr = dstabbr + } else { + abbr = stdabbr "/" dstabbr + } + } + sub(/%z/, abbr) + } } - # In rearguard format, change the Morocco lines with negative SAVE values - # to use positive SAVE values. - if (!vanguard && $1 == "Rule" && $2 == "Morocco" && $4 == 2018 \ - && $6 == "Oct") { - sub(/\t2018\t/, "\t2017\t") + # Normally, prefer whole seconds. However, prefer subseconds + # if generating vanguard form and the otherwise-undocumented + # VANGUARD_SUBSECONDS environment variable is set. + # This relies on #STDOFF comment lines in the data. + # It is for hypothetical clients that support UT offsets that are + # not integer multiples of one second (e.g., Europe/Lisbon, 1884 to 1912). + # No known clients need this currently, and this experimental + # feature may be changed or withdrawn in future releases. + if ($1 == "#STDOFF") { + stdoff = $2 + rounded_stdoff = round_to_second(stdoff) + if (DATAFORM == "vanguard" && ENVIRON["VANGUARD_SUBSECONDS"]) { + stdoff_subst[0] = rounded_stdoff + stdoff_subst[1] = stdoff + } else { + stdoff_subst[0] = stdoff + stdoff_subst[1] = rounded_stdoff + } + } else if (stdoff_subst[0]) { + stdoff_column = 2 * ($0 ~ /^Zone/) + 1 + stdoff_column_val = $stdoff_column + if (stdoff_column_val == stdoff_subst[0]) { + sub(stdoff_subst[0], stdoff_subst[1]) + } else if (stdoff_column_val != stdoff_subst[1]) { + stdoff_subst[0] = 0 + } } - if (!vanguard && $1 == "Rule" && $2 == "Morocco" && 2019 <= $3) { - if ($9 == "0") { - last_std_date = $3 " " $6 " " $7 " " $8 - sub(/\t0\t/, "\t1:00\t") + + # In rearguard form, change the Japan rule line with "Sat>=8 25:00" + # to "Sun>=9 1:00", to cater to zic before 2007 and to older Java. + if ($0 ~ /^Rule/ && $2 == "Japan") { + if (DATAFORM == "rearguard") { + if ($7 == "Sat>=8" && $8 == "25:00") { + sub(/Sat>=8/, "Sun>=9") + sub(/25:00/, " 1:00") + } } else { - sub(/\t-1:00\t/, "\t0\t") + if ($7 == "Sun>=9" && $8 == "1:00") { + sub(/Sun>=9/, "Sat>=8") + sub(/ 1:00/, "25:00") + } } } - if (!vanguard && $1 == "1:00" && $2 == "Morocco" && $3 == "+01/+00") { - # This introduces a transition from 01:59:59 +00 to 03:00:00 +01 - # with both times being standard (i.e., a change to standard UT offset). - # This is rearguard's way to approximate the actual prediction, - # which is that of an ordinary transition from DST to standard time. - sub(/1:00\tMorocco\t\+01\/\+00$/, - "0:00\tMorocco\t+00/+01\t" last_std_date "\n\t\t\t 1:00\t-\t+01") + + # In rearguard form, change the Morocco lines with negative SAVE values + # to use positive SAVE values. + if ($2 == "Morocco") { + if ($0 ~ /^Rule/) { + if ($4 ~ /^201[78]$/ && $6 == "Oct") { + if (DATAFORM == "rearguard") { + sub(/\t2018\t/, "\t2017\t") + } else { + sub(/\t2017\t/, "\t2018\t") + } + } + + if (2019 <= $3) { + if ($8 == "2:00") { + if (DATAFORM == "rearguard") { + sub(/\t0\t/, "\t1:00\t") + } else { + sub(/\t1:00\t/, "\t0\t") + } + } else { + if (DATAFORM == "rearguard") { + sub(/\t-1:00\t/, "\t0\t") + } else { + sub(/\t0\t/, "\t-1:00\t") + } + } + } + } + if ($1 ~ /^[+0-9-]/ && NF == 3) { + if (DATAFORM == "rearguard") { + sub(/1:00\tMorocco/, "0:00\tMorocco") + sub(/\t\+01\/\+00$/, "\t+00/+01") + } else { + sub(/0:00\tMorocco/, "1:00\tMorocco") + sub(/\t\+00\/+01$/, "\t+01/+00") + } + } + } +} + +/^Zone/ { + packrat_ignored = FILENAME == PACKRATDATA && PACKRATLIST && !packratlist[$2]; +} +{ + if (packrat_ignored && $0 !~ /^Rule/) { + sub(/^/, "#") } } --- contrib/tzdata/zishrink.awk.orig +++ contrib/tzdata/zishrink.awk @@ -23,7 +23,7 @@ function gen_rule_name(name, \ n) { - # Use a simple memonic: the first two letters. + # Use a simple mnemonic: the first two letters. n = substr(name, 1, 2) record_hash(n, name) # printf "# %s = %s\n", n, name @@ -150,10 +150,19 @@ } } +function make_line(n, field, \ + f, r) +{ + r = field[1] + for (f = 2; f <= n; f++) + r = r " " field[f] + return r +} + # Process the input line LINE and save it for later output. function process_input_line(line, \ - field, end, i, n, startdef, \ + f, field, end, i, n, r, startdef, \ linkline, ruleline, zoneline) { # Remove comments, normalize spaces, and append a space to each line. @@ -218,12 +227,11 @@ n = split(line, field) - # Abbreviate rule names. - i = zoneline ? 4 : linkline ? 0 : 2 - if (i && field[i] ~ /^[^-+0-9]/) { - if (!rule[field[i]]) - rule[field[i]] = gen_rule_name(field[i]) - field[i] = rule[field[i]] + # Record which rule names are used, and generate their abbreviations. + f = zoneline ? 4 : linkline || ruleline ? 0 : 2 + r = field[f] + if (r ~ /^[^-+0-9]/) { + rule_used[r] = 1 } # If this zone supersedes an earlier one, delete the earlier one @@ -246,10 +254,38 @@ zonedef[zonename] = nout + 1 # Save the line for later output. - line = field[1] - for (i = 2; i <= n; i++) - line = line " " field[i] - output_line[nout++] = line + output_line[nout++] = make_line(n, field) +} + +function omit_unused_rules( \ + i, field) +{ + for (i = 0; i < nout; i++) { + split(output_line[i], field) + if (field[1] == "R" && !rule_used[field[2]]) { + output_line[i] = "" + } + } +} + +function abbreviate_rule_names( \ + abbr, f, field, i, n, r) +{ + for (i = 0; i < nout; i++) { + n = split(output_line[i], field) + if (n) { + f = field[1] == "Z" ? 4 : field[1] == "L" ? 0 : 2 + r = field[f] + if (r ~ /^[^-+0-9]/) { + abbr = rule[r] + if (!abbr) { + rule[r] = abbr = gen_rule_name(r) + } + field[f] = abbr + output_line[i] = make_line(n, field) + } + } + } } function output_saved_lines( \ @@ -314,5 +350,7 @@ } END { + omit_unused_rules() + abbreviate_rule_names() output_saved_lines() } --- contrib/tzdata/zone.tab.orig +++ contrib/tzdata/zone.tab @@ -130,7 +130,7 @@ CA +6227-11421 America/Yellowknife Mountain - NT (central) CA +682059-1334300 America/Inuvik Mountain - NT (west) CA +4906-11631 America/Creston MST - BC (Creston) -CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) +CA +5546-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +6043-13503 America/Whitehorse MST - Yukon (east) CA +6404-13925 America/Dawson MST - Yukon (west) @@ -400,7 +400,7 @@ TV -0831+17913 Pacific/Funafuti TW +2503+12130 Asia/Taipei TZ -0648+03917 Africa/Dar_es_Salaam -UA +5026+03031 Europe/Kiev Ukraine (most areas) +UA +5026+03031 Europe/Kyiv Ukraine (most areas) UA +4837+02218 Europe/Uzhgorod Transcarpathia UA +4750+03510 Europe/Zaporozhye Zaporozhye and east Lugansk UG +0019+03225 Africa/Kampala --- contrib/tzdata/zone1970.tab.orig +++ contrib/tzdata/zone1970.tab @@ -35,7 +35,7 @@ #country- #codes coordinates TZ comments AD +4230+00131 Europe/Andorra -AE,OM +2518+05518 Asia/Dubai +AE,OM,RE,SC,TF +2518+05518 Asia/Dubai UAE, Oman, Réunion, Seychelles, Crozet, Scattered Is AF +3431+06912 Asia/Kabul AL +4120+01950 Europe/Tirane AM +4011+04430 Asia/Yerevan @@ -45,7 +45,6 @@ AQ -6448-06406 Antarctica/Palmer Palmer AQ -6734-06808 Antarctica/Rothera Rothera AQ -720041+0023206 Antarctica/Troll Troll -AQ -7824+10654 Antarctica/Vostok Vostok AR -3436-05827 America/Argentina/Buenos_Aires Buenos Aires (BA, CF) AR -3124-06411 America/Argentina/Cordoba Argentina (most areas: CB, CC, CN, ER, FM, MN, SE, SF) AR -2447-06525 America/Argentina/Salta Salta (SA, LP, NQ, RN) @@ -75,10 +74,9 @@ AZ +4023+04951 Asia/Baku BB +1306-05937 America/Barbados BD +2343+09025 Asia/Dhaka -BE +5050+00420 Europe/Brussels +BE,LU,NL +5050+00420 Europe/Brussels BG +4241+02319 Europe/Sofia BM +3217-06446 Atlantic/Bermuda -BN +0456+11455 Asia/Brunei BO -1630-06809 America/La_Paz BR -0351-03225 America/Noronha Atlantic islands BR -0127-04829 America/Belem Pará (east); Amapá @@ -119,30 +117,27 @@ CA +690650-1050310 America/Cambridge_Bay Mountain - NU (west) CA +6227-11421 America/Yellowknife Mountain - NT (central) CA +682059-1334300 America/Inuvik Mountain - NT (west) -CA +5946-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) +CA +5546-12014 America/Dawson_Creek MST - BC (Dawson Cr, Ft St John) CA +5848-12242 America/Fort_Nelson MST - BC (Ft Nelson) CA +6043-13503 America/Whitehorse MST - Yukon (east) CA +6404-13925 America/Dawson MST - Yukon (west) CA +4916-12307 America/Vancouver Pacific - BC (most areas) -CC -1210+09655 Indian/Cocos CH,DE,LI +4723+00832 Europe/Zurich Swiss time -CI,BF,GH,GM,GN,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan +CI,BF,GH,GM,GN,IS,ML,MR,SH,SL,SN,TG +0519-00402 Africa/Abidjan CK -2114-15946 Pacific/Rarotonga CL -3327-07040 America/Santiago Chile (most areas) CL -5309-07055 America/Punta_Arenas Region of Magallanes CL -2709-10926 Pacific/Easter Easter Island CN +3114+12128 Asia/Shanghai Beijing Time -CN +4348+08735 Asia/Urumqi Xinjiang Time +CN,AQ +4348+08735 Asia/Urumqi Xinjiang Time, Vostok CO +0436-07405 America/Bogota CR +0956-08405 America/Costa_Rica CU +2308-08222 America/Havana CV +1455-02331 Atlantic/Cape_Verde -CX -1025+10543 Indian/Christmas CY +3510+03322 Asia/Nicosia Cyprus (most areas) CY +3507+03357 Asia/Famagusta Northern Cyprus CZ,SK +5005+01426 Europe/Prague -DE +5230+01322 Europe/Berlin Germany (most areas) -DK +5540+01235 Europe/Copenhagen +DE,DK,NO,SE,SJ +5230+01322 Europe/Berlin Germany (most areas), Scandinavia DO +1828-06954 America/Santo_Domingo DZ +3647+00303 Africa/Algiers EC -0210-07950 America/Guayaquil Ecuador (mainland) @@ -156,11 +151,9 @@ FI,AX +6010+02458 Europe/Helsinki FJ -1808+17825 Pacific/Fiji FK -5142-05751 Atlantic/Stanley -FM +0725+15147 Pacific/Chuuk Chuuk/Truk, Yap -FM +0658+15813 Pacific/Pohnpei Pohnpei/Ponape FM +0519+16259 Pacific/Kosrae Kosrae FO +6201-00646 Atlantic/Faroe -FR +4852+00220 Europe/Paris +FR,MC +4852+00220 Europe/Paris GB,GG,IM,JE +513030-0000731 Europe/London GE +4143+04449 Asia/Tbilisi GF +0456-05220 America/Cayenne @@ -189,14 +182,13 @@ IO -0720+07225 Indian/Chagos IQ +3321+04425 Asia/Baghdad IR +3540+05126 Asia/Tehran -IS +6409-02151 Atlantic/Reykjavik IT,SM,VA +4154+01229 Europe/Rome JM +175805-0764736 America/Jamaica JO +3157+03556 Asia/Amman JP +353916+1394441 Asia/Tokyo KE,DJ,ER,ET,KM,MG,SO,TZ,UG,YT -0117+03649 Africa/Nairobi KG +4254+07436 Asia/Bishkek -KI +0125+17300 Pacific/Tarawa Gilbert Islands +KI,MH,TV,UM,WF +0125+17300 Pacific/Tarawa Gilberts, Marshalls, Tuvalu, Wallis & Futuna, Wake KI -0247-17143 Pacific/Kanton Phoenix Islands KI +0152-15720 Pacific/Kiritimati Line Islands KP +3901+12545 Asia/Pyongyang @@ -212,15 +204,12 @@ LK +0656+07951 Asia/Colombo LR +0618-01047 Africa/Monrovia LT +5441+02519 Europe/Vilnius -LU +4936+00609 Europe/Luxembourg LV +5657+02406 Europe/Riga LY +3254+01311 Africa/Tripoli MA +3339-00735 Africa/Casablanca -MC +4342+00723 Europe/Monaco MD +4700+02850 Europe/Chisinau -MH +0709+17112 Pacific/Majuro Marshall Islands (most areas) MH +0905+16720 Pacific/Kwajalein Kwajalein -MM +1647+09610 Asia/Yangon +MM,CC +1647+09610 Asia/Yangon MN +4755+10653 Asia/Ulaanbaatar Mongolia (most areas) MN +4801+09139 Asia/Hovd Bayan-Ölgii, Govi-Altai, Hovd, Uvs, Zavkhan MN +4804+11430 Asia/Choibalsan Dornod, Sükhbaatar @@ -228,7 +217,7 @@ MQ +1436-06105 America/Martinique MT +3554+01431 Europe/Malta MU -2010+05730 Indian/Mauritius -MV +0410+07330 Indian/Maldives +MV,TF +0410+07330 Indian/Maldives Maldives, Kerguelen, St Paul I, Amsterdam I MX +1924-09909 America/Mexico_City Central Time MX +2105-08646 America/Cancun Eastern Standard Time - Quintana Roo MX +2058-08937 America/Merida Central Time - Campeche, Yucatán @@ -240,16 +229,13 @@ MX +2904-11058 America/Hermosillo Mountain Standard Time - Sonora MX +3232-11701 America/Tijuana Pacific Time US - Baja California MX +2048-10515 America/Bahia_Banderas Central Time - Bahía de Banderas -MY +0310+10142 Asia/Kuala_Lumpur Malaysia (peninsula) -MY +0133+11020 Asia/Kuching Sabah, Sarawak +MY,BN +0133+11020 Asia/Kuching Sabah, Sarawak, Brunei MZ,BI,BW,CD,MW,RW,ZM,ZW -2558+03235 Africa/Maputo Central Africa Time NA -2234+01706 Africa/Windhoek NC -2216+16627 Pacific/Noumea NF -2903+16758 Pacific/Norfolk NG,AO,BJ,CD,CF,CG,CM,GA,GQ,NE +0627+00324 Africa/Lagos West Africa Time NI +1209-08617 America/Managua -NL +5222+00454 Europe/Amsterdam -NO,SJ +5955+01045 Europe/Oslo NP +2743+08519 Asia/Kathmandu NR -0031+16655 Pacific/Nauru NU -1901-16955 Pacific/Niue @@ -260,7 +246,7 @@ PF -1732-14934 Pacific/Tahiti Society Islands PF -0900-13930 Pacific/Marquesas Marquesas Islands PF -2308-13457 Pacific/Gambier Gambier Islands -PG,AQ -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas), Dumont d'Urville +PG,AQ,FM -0930+14710 Pacific/Port_Moresby Papua New Guinea (most areas), Chuuk, Yap, Dumont d'Urville PG -0613+15534 Pacific/Bougainville Bougainville PH +1435+12100 Asia/Manila PK +2452+06703 Asia/Karachi @@ -276,7 +262,6 @@ PW +0720+13429 Pacific/Palau PY -2516-05740 America/Asuncion QA,BH +2517+05132 Asia/Qatar -RE,TF -2052+05528 Indian/Reunion Réunion, Crozet, Scattered Islands RO +4426+02606 Europe/Bucharest RS,BA,HR,ME,MK,SI +4450+02030 Europe/Belgrade RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad @@ -308,10 +293,8 @@ RU +5301+15839 Asia/Kamchatka MSK+09 - Kamchatka RU +6445+17729 Asia/Anadyr MSK+09 - Bering Sea SA,AQ,KW,YE +2438+04643 Asia/Riyadh Arabia, Syowa -SB -0932+16012 Pacific/Guadalcanal -SC -0440+05528 Indian/Mahe +SB,FM -0932+16012 Pacific/Guadalcanal Solomons, Pohnpei SD +1536+03232 Africa/Khartoum -SE +5920+01803 Europe/Stockholm SG,MY +0117+10351 Asia/Singapore Singapore, peninsular Malaysia SR +0550-05510 America/Paramaribo SS +0451+03137 Africa/Juba @@ -320,8 +303,7 @@ SY +3330+03618 Asia/Damascus TC +2128-07108 America/Grand_Turk TD +1207+01503 Africa/Ndjamena -TF -492110+0701303 Indian/Kerguelen Kerguelen, St Paul Island, Amsterdam Island -TH,KH,LA,VN +1345+10031 Asia/Bangkok Indochina (most areas) +TH,CX,KH,LA,VN +1345+10031 Asia/Bangkok Indochina (most areas) TJ +3835+06848 Asia/Dushanbe TK -0922-17114 Pacific/Fakaofo TL -0833+12535 Asia/Dili @@ -329,12 +311,10 @@ TN +3648+01011 Africa/Tunis TO -210800-1751200 Pacific/Tongatapu TR +4101+02858 Europe/Istanbul -TV -0831+17913 Pacific/Funafuti TW +2503+12130 Asia/Taipei -UA +5026+03031 Europe/Kiev Ukraine (most areas) +UA +5026+03031 Europe/Kyiv Ukraine (most areas) UA +4837+02218 Europe/Uzhgorod Transcarpathia UA +4750+03510 Europe/Zaporozhye Zaporozhye and east Lugansk -UM +1917+16637 Pacific/Wake Wake Island US +404251-0740023 America/New_York Eastern (most areas) US +421953-0830245 America/Detroit Eastern - MI (most areas) US +381515-0854534 America/Kentucky/Louisville Eastern - KY (Louisville area) @@ -370,6 +350,29 @@ VE +1030-06656 America/Caracas VN +1045+10640 Asia/Ho_Chi_Minh Vietnam (south) VU -1740+16825 Pacific/Efate -WF -1318-17610 Pacific/Wallis WS -1350-17144 Pacific/Apia ZA,LS,SZ -2615+02800 Africa/Johannesburg +# +# The next section contains experimental tab-separated comments for +# use by user agents like tzselect that identify continents and oceans. +# +# For example, the comment "#@AQAntarctica/" means the country code +# AQ is in the continent Antarctica regardless of the Zone name, +# so Pacific/Auckland should be listed under Antarctica as well as +# under the Pacific because its line's country codes include AQ. +# +# If more than one country code is affected each is listed separated +# by commas, e.g., #@IS,SHAtlantic/". If a country code is in +# more than one continent or ocean, each is listed separated by +# commas, e.g., the second column of "#@CY,TRAsia/,Europe/". +# +# These experimental comments are present only for country codes where +# the continent or ocean is not already obvious from the Zone name. +# For example, there is no such comment for RU since it already +# corresponds to Zone names starting with both "Europe/" and "Asia/". +# +#@AQ Antarctica/ +#@IS,SH Atlantic/ +#@CY,TR Asia/,Europe/ +#@SJ Arctic/ +#@CC,CX,KM,MG,YT Indian/