--- contrib/tzdata/Makefile.orig +++ contrib/tzdata/Makefile @@ -380,15 +380,18 @@ # is typically nicer if it works. KSHELL= /bin/bash +# Name of curl , used for HTML validation. +CURL= curl + # The path where SGML DTDs are kept and the catalog file(s) to use when -# validating. The default should work on both Debian and Red Hat. +# validating HTML 4.01. The default should work on both Debian and Red Hat. SGML_TOPDIR= /usr SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224 SGML_CATALOG_FILES= \ $(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat:$(SGML_TOPDIR)/share/sgml/html/4.01/HTML4.cat -# The name, arguments and environment of a program to validate your web pages. +# The name, arguments and environment of a program to validate HTML 4.01. # See for a validator, and # for a validation library. # Set VALIDATE=':' if you do not have such a program. @@ -488,6 +491,7 @@ COMMON= calendars CONTRIBUTING LICENSE Makefile \ NEWS README theory.html version WEB_PAGES= tz-art.html tz-how-to.html tz-link.html +CHECK_WEB_PAGES=check_tz-art.html check_tz-how-to.html check_tz-link.html DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES) PRIMARY_YDATA= africa antarctica asia australasia \ europe northamerica southamerica @@ -799,9 +803,15 @@ fi touch $@ -# This checks only the HTML 4.01 strict page. -# To check the the other pages, use . -check_web: tz-how-to.html +check_web: $(CHECK_WEB_PAGES) +check_tz-art.html: tz-art.html +check_tz-link.html: tz-link.html +check_tz-art.html check_tz-link.html: + $(CURL) -sS --url https://validator.w3.org/nu/ -F out=gnu \ + -F file=@$$(expr $@ : 'check_\(.*\)') -o $@.out && \ + test ! -s $@.out || { cat $@.out; exit 1; } + mv $@.out $@ +check_tz-how-to.html: tz-how-to.html $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) tz-how-to.html touch $@ @@ -1068,7 +1078,7 @@ .PHONY: ALL INSTALL all .PHONY: check check_time_t_alternatives -.PHONY: check_zishrink +.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 --- contrib/tzdata/NEWS.orig +++ contrib/tzdata/NEWS @@ -1,14 +1,103 @@ News for the tz database +Release 2018i - 2018-12-30 11:05:43 -0800 + + Briefly: + São Tomé and Príncipe switches from +01 to +00 on 2019-01-01. + + Changes to future timestamps + + Due to a change in government, São Tomé and Príncipe switches back + from +01 to +00 on 2019-01-01 at 02:00. (Thanks to Vadim + Nasardinov and Michael Deckers.) + + +Release 2018h - 2018-12-23 17:59:32 -0800 + + Briefly: + Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21. + New zone Asia/Qostanay because Qostanay, Kazakhstan didn't move. + Metlakatla, Alaska observes PST this winter only. + Guess Morocco will continue to adjust clocks around Ramadan. + Add predictions for Iran from 2038 through 2090. + + Changes to future timestamps + + Guess that Morocco will continue to fall back just before and + spring forward just after Ramadan, the practice since 2012. + (Thanks to Maamar Abdelkader.) This means Morocco will observe + negative DST during Ramadan in main and vanguard formats, and in + rearguard format it stays in the +00 timezone and observes + ordinary DST in all months other than Ramadan. As before, extend + this guesswork to the year 2037. As a consequence, Morocco is + scheduled to observe three DST transitions in some Gregorian years + (e.g., 2033) due to the mismatch between the Gregorian and Islamic + calendars. + + The table of exact transitions for Iranian DST has been extended. + It formerly cut off before the year 2038 in a nod to 32-bit time_t. + It now cuts off before 2091 as there is doubt about how the Persian + calendar will treat 2091. This change predicts DST transitions in + 2038-9, 2042-3, and 2046-7 to occur one day later than previously + predicted. As before, post-cutoff transitions are approximated. + + Changes to past and future timestamps + + Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to + +05 on 2018-12-21. This is a zone split as Qostanay (aka + Kostanay) did not switch, so create a zone Asia/Qostanay. + + Metlakatla moved from Alaska to Pacific standard time on 2018-11-04. + It did not change clocks that day and remains on -08 this winter. + (Thanks to Ryan Stanley.) It will revert to the usual Alaska + rules next spring, so this change affects only timestamps + from 2018-11-04 through 2019-03-10. + + Change to past timestamps + + Kwajalein's 1993-08-20 transition from -12 to +12 was at 24:00, + not 00:00. I transcribed the time incorrectly from Shanks. + (Thanks to Phake Nick.) + + Nauru's 1979 transition was on 02-10 at 02:00, not 05-01 at 00:00. + (Thanks to Phake Nick.) + + Guam observed DST irregularly from 1959 through 1977. + (Thanks to Phake Nick.) + + Hong Kong observed DST in 1941 starting 06-15 (not 04-01), then on + 10-01 changed standard time to +08:30 (not +08). Its transition + back to +08 after WWII was on 1945-09-15, not the previous day. + Its 1904-10-30 change took effect at 01:00 +08 (not 00:00 LMT). + (Thanks to Phake Nick, Steve Allen, and Joseph Myers.) Also, + its 1952 fallback was on 11-02 (not 10-25). + + This release contains many changes to timestamps before 1946 due + to Japanese possession or occupation of Pacific/Chuuk, + Pacific/Guam, Pacific/Kosrae, Pacific/Kwajalein, Pacific/Majuro, + Pacific/Nauru, Pacific/Palau, and Pacific/Pohnpei. + (Thanks to Phake Nick.) + + Assume that the Spanish East Indies was like the Philippines and + observed American time until the end of 1844. This affects + Pacific/Chuuk, Pacific/Kosrae, Pacific/Palau, and Pacific/Pohnpei. + + Changes to past tm_isdst flags + + For the recent Morocco change, the tm_isdst flag should be 1 from + 2018-10-27 00:00 to 2018-10-28 03:00. (Thanks to Michael Deckers.) + Give a URL to the official decree. (Thanks to Matt Johnson.) + + Release 2018g - 2018-10-26 22:22:45 -0700 Briefly: - Morocco switches to permanent +01 on 2018-10-27. + Morocco switches to permanent +01 on 2018-10-28. Changes to future timestamps - Morocco switches from +00/+01 to permanent +01 effective 2018-10-27, - so its clocks will not fall back on 2018-10-28 as previously scheduled. + Morocco switches from +00/+01 to permanent +01 effective 2018-10-28, + so its clocks will not fall back as previously scheduled. (Thanks to Mohamed Essedik Najd and Brian Inglis.) Changes to code @@ -119,7 +208,7 @@ localtime.c no longer ignores TZif POSIX-style TZ strings that specify only standard time. Instead, these TZ strings now override the default time type for timestamps after the last - transition (or for all time stamps if there are no transitions), + transition (or for all timestamps if there are no transitions), just as DST strings specifying DST have always done. leapseconds.awk now outputs "#updated" and "#expires" comments, --- contrib/tzdata/africa.orig +++ contrib/tzdata/africa @@ -847,8 +847,41 @@ # From Mohamed Essedik Najd (2018-10-26): # Today, a Moroccan government council approved the perpetual addition # of 60 minutes to the regular Moroccan timezone. -# From Brian Inglis (2018-10-26): -# http://www.maroc.ma/fr/actualites/le-conseil-de-gouvernement-adopte-un-projet-de-decret-relatif-lheure-legale-stipulant-le +# From Matt Johnson (2018-10-28): +# http://www.sgg.gov.ma/Portals/1/BO/2018/BO_6720-bis_Ar.pdf +# +# From Maamar Abdelkader (2018-11-01): +# We usually move clocks back the previous week end and come back to the +1 +# the week end after.... The government does not announce yet the decision +# about this temporary change. But it s 99% sure that it will be the case, +# as in previous years. An unofficial survey was done these days, showing +# that 64% of asked peopke are ok for moving from +1 to +0 during Ramadan. +# https://leconomiste.com/article/1035870-enquete-l-economiste-sunergia-64-des-marocains-plebiscitent-le-gmt-pendant-ramadan +# +# From Paul Eggert (2018-11-01): +# For now, guess that Morocco will fall back at 03:00 the last Sunday +# before Ramadan, and spring forward at 02:00 the first Sunday after +# Ramadan, as this has been the practice since 2012. To implement this, +# transition dates for 2019 through 2037 were determined by running the +# following program under GNU Emacs 26.1. +# (let ((islamic-year 1440)) +# (require 'cal-islam) +# (while (< islamic-year 1460) +# (let ((a (calendar-islamic-to-absolute (list 9 1 islamic-year))) +# (b (calendar-islamic-to-absolute (list 10 1 islamic-year))) +# (sunday 0)) +# (while (/= sunday (mod (setq a (1- a)) 7))) +# (while (/= sunday (mod b 7)) +# (setq b (1+ b))) +# (setq a (calendar-gregorian-from-absolute a)) +# (setq b (calendar-gregorian-from-absolute b)) +# (insert +# (format +# (concat "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 3:00\t-1:00\t-\n" +# "Rule\tMorocco\t%d\tonly\t-\t%s\t%2d\t 2:00\t0\t-\n") +# (car (cdr (cdr a))) (calendar-month-name (car a) t) (car (cdr a)) +# (car (cdr (cdr b))) (calendar-month-name (car b) t) (car (cdr b))))) +# (setq islamic-year (+ 1 islamic-year)))) # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Morocco 1939 only - Sep 12 0:00 1:00 - @@ -892,13 +925,53 @@ Rule Morocco 2017 only - Jul 2 2:00 1:00 - Rule Morocco 2018 only - May 13 3:00 0 - Rule Morocco 2018 only - Jun 17 2:00 1:00 - +Rule Morocco 2019 only - May 5 3:00 -1:00 - +Rule Morocco 2019 only - Jun 9 2:00 0 - +Rule Morocco 2020 only - Apr 19 3:00 -1:00 - +Rule Morocco 2020 only - May 24 2:00 0 - +Rule Morocco 2021 only - Apr 11 3:00 -1:00 - +Rule Morocco 2021 only - May 16 2:00 0 - +Rule Morocco 2022 only - Mar 27 3:00 -1:00 - +Rule Morocco 2022 only - May 8 2:00 0 - +Rule Morocco 2023 only - Mar 19 3:00 -1:00 - +Rule Morocco 2023 only - Apr 23 2:00 0 - +Rule Morocco 2024 only - Mar 10 3:00 -1:00 - +Rule Morocco 2024 only - Apr 14 2:00 0 - +Rule Morocco 2025 only - Feb 23 3:00 -1:00 - +Rule Morocco 2025 only - Apr 6 2:00 0 - +Rule Morocco 2026 only - Feb 15 3:00 -1:00 - +Rule Morocco 2026 only - Mar 22 2:00 0 - +Rule Morocco 2027 only - Feb 7 3:00 -1:00 - +Rule Morocco 2027 only - Mar 14 2:00 0 - +Rule Morocco 2028 only - Jan 23 3:00 -1:00 - +Rule Morocco 2028 only - Feb 27 2:00 0 - +Rule Morocco 2029 only - Jan 14 3:00 -1:00 - +Rule Morocco 2029 only - Feb 18 2:00 0 - +Rule Morocco 2029 only - Dec 30 3:00 -1:00 - +Rule Morocco 2030 only - Feb 10 2:00 0 - +Rule Morocco 2030 only - Dec 22 3:00 -1:00 - +Rule Morocco 2031 only - Jan 26 2:00 0 - +Rule Morocco 2031 only - Dec 14 3:00 -1:00 - +Rule Morocco 2032 only - Jan 18 2:00 0 - +Rule Morocco 2032 only - Nov 28 3:00 -1:00 - +Rule Morocco 2033 only - Jan 9 2:00 0 - +Rule Morocco 2033 only - Nov 20 3:00 -1:00 - +Rule Morocco 2033 only - Dec 25 2:00 0 - +Rule Morocco 2034 only - Nov 5 3:00 -1:00 - +Rule Morocco 2034 only - Dec 17 2:00 0 - +Rule Morocco 2035 only - Oct 28 3:00 -1:00 - +Rule Morocco 2035 only - Dec 2 2:00 0 - +Rule Morocco 2036 only - Oct 19 3:00 -1:00 - +Rule Morocco 2036 only - Nov 23 2:00 0 - +Rule Morocco 2037 only - Oct 4 3:00 -1:00 - +Rule Morocco 2037 only - Nov 15 2:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Casablanca -0:30:20 - LMT 1913 Oct 26 0:00 Morocco +00/+01 1984 Mar 16 1:00 - +01 1986 - 0:00 Morocco +00/+01 2018 Oct 27 - 1:00 - +01 + 0:00 Morocco +00/+01 2018 Oct 28 3:00 + 1:00 Morocco +01/+00 # Western Sahara # @@ -913,8 +986,8 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún -1:00 - -01 1976 Apr 14 - 0:00 Morocco +00/+01 2018 Oct 27 - 1:00 - +01 + 0:00 Morocco +00/+01 2018 Oct 28 3:00 + 1:00 Morocco +01/+00 # Mozambique # @@ -1071,10 +1144,20 @@ # the switch is from 01:00 to 02:00 ... [Decree No. 25/2017] # http://www.mnec.gov.st/index.php/publicacoes/documentos/file/90-decreto-lei-n-25-2017 +# From Vadim Nasardinov (2018-12-29): +# São Tomé and Príncipe is about to do the following on Jan 1, 2019: +# https://www.stp-press.st/2018/12/05/governo-jesus-ja-decidiu-repor-hora-legal-sao-tomense/ +# +# 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.] + Zone Africa/Sao_Tome 0:26:56 - LMT 1884 -0:36:45 - LMT 1912 Jan 1 00:00u # Lisbon MT 0:00 - GMT 2018 Jan 1 01:00 - 1:00 - WAT + 1:00 - WAT 2019 Jan 1 02:00 + 0:00 - GMT # Senegal # See Africa/Abidjan. --- contrib/tzdata/asia.orig +++ contrib/tzdata/asia @@ -586,12 +586,82 @@ # obtained from # http://www.hko.gov.hk/gts/time/Summertime.htm -# From Arthur David Olson (2009-10-28): +# From Phake Nick (2018-10-27): +# According to Singaporean newspaper +# http://eresources.nlb.gov.sg/newspapers/Digitised/Article/singfreepresswk19041102-1.2.37 +# the day that Hong Kong start using GMT+8 should be Oct 30, 1904. +# +# From Paul Eggert (2018-11-17): +# Hong Kong had a time ball near the Marine Police Station, Tsim Sha Tsui. +# "The ball was raised manually each day and dropped at exactly 1pm +# (except on Sundays and Government holidays)." +# Dyson AD. From Time Ball to Atomic Clock. Hong Kong Government. 1983. +# +# "From 1904 October 30 the time-ball at Hong Kong has been dropped by order +# of the Governor of the Colony at 17h 0m 0s G.M.T., which is 23m 18s.14 in +# advance of 1h 0m 0s of Hong Kong mean time." +# Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc. +# 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382 +# +# From Joseph Myers (2018-11-18): +# An astronomer before 1925 referring to GMT would have been using the old +# astronomical convention where the day started at noon, not midnight. +# +# From Steve Allen (2018-11-17): +# Meteorological Observations made at the Hongkong Observatory in the year 1904 +# page 4 +# ... the log of drop times in Table II shows that on Sunday 1904-10-30 the +# ball was dropped. So that looks like a special case drop for the sake +# of broadcasting the new local time. +# +# From Phake Nick (2018-11-18): +# According to The Hong Kong Weekly Press, 1904-10-29, p.324, the +# governor of Hong Kong at the time stated that "We are further desired to +# make it known that the change will be effected by firing the gun and by the +# dropping of the Ball at 23min. 18sec. before one." +# From Paul Eggert (2018-11-18): +# See for this; unfortunately Flash is required. + +# From Phake Nick (2018-10-26): +# I went to check microfilm records stored at Hong Kong Public Library.... +# on September 30 1941, according to Ta Kung Pao (Hong Kong edition), it was +# stated that fallback would occur on the next day (the 1st)'s "03:00 am (Hong +# Kong Time 04:00 am)" and the clock will fall back for a half hour. (03:00 +# probably refer to the time commonly used in mainland China at the time given +# the paper's background) ... the sunrise/sunset time given by South China +# Morning Post for October 1st was indeed moved by half an hour compares to +# before. After that, in December, the battle to capture Hong Kong started and +# the library doesn't seems to have any record stored about press during that +# period of time. Some media resumed publication soon after that within the +# same month, but there were not much information about time there. Later they +# started including a radio program guide when they restored radio service, +# explicitly mentioning it use Tokyo standard time, and later added a note +# saying it's half an hour ahead of the old Hong Kong standard time, and it +# also seems to indicate that Hong Kong was not using GMT+8 when it was +# captured by Japan. +# +# Image of related sections on newspaper: +# * 1941-09-30, Ta Kung Pao (Hong Kong), "Winter Time start tomorrow". +# https://i.imgur.com/6waY51Z.jpg (Chinese) +# * 1941-09-29, South China Morning Post, Information on sunrise/sunset +# time and other things for September 30 and October 1. +# https://i.imgur.com/kCiUR78.jpg +# * 1942-02-05. The Hong Kong News, Radio Program Guide. +# https://i.imgur.com/eVvDMzS.jpg +# * 1941-06-14. Hong Kong Daily Press, Daylight Saving from 3am Tomorrow. +# https://i.imgur.com/05KkvtC.png +# * 1941-09-30, Hong Kong Daily Press, Winter Time Warning. +# https://i.imgur.com/dge4kFJ.png +# Also, the Liberation day of Hong Kong after WWII which British rule +# over the territory resumed was August 30, 1945, which I think should +# be the termination date for the use of JST in the territory.... + +# From Paul Eggert (2018-11-17): # Here are the dates given at -# http://www.hko.gov.hk/gts/time/Summertime.htm -# as of 2009-10-28: +# https://www.hko.gov.hk/gts/time/Summertime.htm +# as of 2014-06-19: # Year Period -# 1941 1 Apr to 30 Sep +# 1941 15 Jun to 30 Sep # 1942 Whole year # 1943 Whole year # 1944 Whole year @@ -602,7 +672,7 @@ # 1949 3 Apr to 30 Oct # 1950 2 Apr to 29 Oct # 1951 1 Apr to 28 Oct -# 1952 6 Apr to 25 Oct +# 1952 6 Apr to 2 Nov # 1953 5 Apr to 1 Nov # 1954 21 Mar to 31 Oct # 1955 20 Mar to 6 Nov @@ -631,25 +701,25 @@ # 1978 Nil # 1979 13 May to 21 Oct # 1980 to Now Nil -# The page does not give start or end times of day. -# The page does not give a start date for 1942. -# The page does not givw an end date for 1945. -# The Japanese occupation of Hong Kong began on 1941-12-25. -# The Japanese surrender of Hong Kong was signed 1945-09-15. -# For lack of anything better, use start of those days as the transition times. +# The page does not give times of day for transitions, +# or dates for the 1942 and 1945 transitions. +# The Japanese occupation of Hong Kong began 1941-12-25. +# The Japanese surrender of Hong Kong was signed 1945-09-16; see: +# Heaver S. The days after the Pacific war ended: unsettling times +# in Hong Kong. Post Magazine. 2016-06-13. +# https://www.scmp.com/magazines/post-magazine/article/1852990/days-after-pacific-war-ended-unsettling-times-hong-kong +# For lack of anything better, use start of those days as the +# transition times. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule HK 1941 only - Apr 1 3:30 1:00 S -Rule HK 1941 only - Sep 30 3:30 0 - Rule HK 1946 only - Apr 20 3:30 1:00 S Rule HK 1946 only - Dec 1 3:30 0 - Rule HK 1947 only - Apr 13 3:30 1:00 S Rule HK 1947 only - Dec 30 3:30 0 - Rule HK 1948 only - May 2 3:30 1:00 S Rule HK 1948 1951 - Oct lastSun 3:30 0 - -Rule HK 1952 only - Oct 25 3:30 0 - +Rule HK 1952 1953 - Nov Sun>=1 3:30 0 - Rule HK 1949 1953 - Apr Sun>=1 3:30 1:00 S -Rule HK 1953 only - Nov 1 3:30 0 - Rule HK 1954 1964 - Mar Sun>=18 3:30 1:00 S Rule HK 1954 only - Oct 31 3:30 0 - Rule HK 1955 1964 - Nov Sun>=1 3:30 0 - @@ -659,9 +729,11 @@ Rule HK 1979 only - May Sun>=8 3:30 1:00 S Rule HK 1979 only - Oct Sun>=16 3:30 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 - 8:00 HK HK%sT 1941 Dec 25 - 9:00 - JST 1945 Sep 15 +Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 0:36:42 + 8:00 - HKT 1941 Jun 15 3:30 + 8:00 1:00 HKST 1941 Oct 1 4:00 + 8:30 - HKT 1941 Dec 25 + 9:00 - JST 1945 Sep 16 8:00 HK HK%sT ############################################################################### @@ -1057,6 +1129,16 @@ # India +# British astronomer Henry Park Hollis disliked India Standard Time's offset: +# "A new time system has been proposed for India, Further India, and Burmah. +# The scheme suggested is that the times of the meridians 5½ and 6½ hours +# east of Greenwich should be adopted in these territories. No reason is +# given why hourly meridians five hours and six hours east should not be +# chosen; a plan which would bring the time of India into harmony with +# that of almost the whole of the civilised world." +# Hollis HP. Universal Time, Longitudes, and Geodesy. Mon Not R Astron Soc. +# 1905-02-10;65(4):405-6. https://doi.org/10.1093/mnras/65.4.382 + # From Ian P. Beacock, in "A brief history of (modern) time", The Atlantic # https://www.theatlantic.com/technology/archive/2015/12/the-creation-of-modern-time/421419/ # (2015-12-22): @@ -1227,12 +1309,65 @@ # leap year calculation involved. There has never been any serious # plan to change that law.... # -# From Paul Eggert (2006-03-22): +# From Paul Eggert (2018-11-30): # Go with Shanks & Pottenger before Sept. 1991, and with Pournader thereafter. -# I used Ed Reingold's cal-persia in GNU Emacs 21.2 to check Persian dates, -# stopping after 2037 when 32-bit time_t's overflow. -# That cal-persia used Birashk's approximation, which disagrees with the solar -# calendar predictions for the year 2025, so I corrected those dates by hand. +# 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 the astronomical Persian calendar +# for Persian years 1404 (Gregorian 2025) and 1437 (Gregorian 2058), +# so the following code special-case 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 Oscar van Vlijmen (2005-03-30), writing about future # discrepancies between cal-persia and the Iranian calendar: @@ -1267,61 +1402,113 @@ # thirtieth day of Shahrivar. # # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Iran 1978 1980 - Mar 21 0:00 1:00 - -Rule Iran 1978 only - Oct 21 0:00 0 - -Rule Iran 1979 only - Sep 19 0:00 0 - -Rule Iran 1980 only - Sep 23 0:00 0 - -Rule Iran 1991 only - May 3 0:00 1:00 - -Rule Iran 1992 1995 - Mar 22 0:00 1:00 - -Rule Iran 1991 1995 - Sep 22 0:00 0 - -Rule Iran 1996 only - Mar 21 0:00 1:00 - -Rule Iran 1996 only - Sep 21 0:00 0 - -Rule Iran 1997 1999 - Mar 22 0:00 1:00 - -Rule Iran 1997 1999 - Sep 22 0:00 0 - -Rule Iran 2000 only - Mar 21 0:00 1:00 - -Rule Iran 2000 only - Sep 21 0:00 0 - -Rule Iran 2001 2003 - Mar 22 0:00 1:00 - -Rule Iran 2001 2003 - Sep 22 0:00 0 - -Rule Iran 2004 only - Mar 21 0:00 1:00 - -Rule Iran 2004 only - Sep 21 0:00 0 - -Rule Iran 2005 only - Mar 22 0:00 1:00 - -Rule Iran 2005 only - Sep 22 0:00 0 - -Rule Iran 2008 only - Mar 21 0:00 1:00 - -Rule Iran 2008 only - Sep 21 0:00 0 - -Rule Iran 2009 2011 - Mar 22 0:00 1:00 - -Rule Iran 2009 2011 - Sep 22 0:00 0 - -Rule Iran 2012 only - Mar 21 0:00 1:00 - -Rule Iran 2012 only - Sep 21 0:00 0 - -Rule Iran 2013 2015 - Mar 22 0:00 1:00 - -Rule Iran 2013 2015 - Sep 22 0:00 0 - -Rule Iran 2016 only - Mar 21 0:00 1:00 - -Rule Iran 2016 only - Sep 21 0:00 0 - -Rule Iran 2017 2019 - Mar 22 0:00 1:00 - -Rule Iran 2017 2019 - Sep 22 0:00 0 - -Rule Iran 2020 only - Mar 21 0:00 1:00 - -Rule Iran 2020 only - Sep 21 0:00 0 - -Rule Iran 2021 2023 - Mar 22 0:00 1:00 - -Rule Iran 2021 2023 - Sep 22 0:00 0 - -Rule Iran 2024 only - Mar 21 0:00 1:00 - -Rule Iran 2024 only - Sep 21 0:00 0 - -Rule Iran 2025 2027 - Mar 22 0:00 1:00 - -Rule Iran 2025 2027 - Sep 22 0:00 0 - -Rule Iran 2028 2029 - Mar 21 0:00 1:00 - -Rule Iran 2028 2029 - Sep 21 0:00 0 - -Rule Iran 2030 2031 - Mar 22 0:00 1:00 - -Rule Iran 2030 2031 - Sep 22 0:00 0 - -Rule Iran 2032 2033 - Mar 21 0:00 1:00 - -Rule Iran 2032 2033 - Sep 21 0:00 0 - -Rule Iran 2034 2035 - Mar 22 0:00 1:00 - -Rule Iran 2034 2035 - Sep 22 0:00 0 - -# -# The following rules are approximations starting in the year 2038. -# These are the best post-2037 approximations available, given the -# restrictions of a single rule using a Gregorian-based data format. +Rule Iran 1978 1980 - Mar 20 24:00 1:00 - +Rule Iran 1978 only - Oct 20 24:00 0 - +Rule Iran 1979 only - Sep 18 24:00 0 - +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 - +Rule Iran 1991 1995 - Sep 21 24:00 0 - +Rule Iran 1996 only - Mar 20 24:00 1:00 - +Rule Iran 1996 only - Sep 20 24:00 0 - +Rule Iran 1997 1999 - Mar 21 24:00 1:00 - +Rule Iran 1997 1999 - Sep 21 24:00 0 - +Rule Iran 2000 only - Mar 20 24:00 1:00 - +Rule Iran 2000 only - Sep 20 24:00 0 - +Rule Iran 2001 2003 - Mar 21 24:00 1:00 - +Rule Iran 2001 2003 - Sep 21 24:00 0 - +Rule Iran 2004 only - Mar 20 24:00 1:00 - +Rule Iran 2004 only - Sep 20 24:00 0 - +Rule Iran 2005 only - Mar 21 24:00 1:00 - +Rule Iran 2005 only - Sep 21 24:00 0 - +Rule Iran 2008 only - Mar 20 24:00 1:00 - +Rule Iran 2008 only - Sep 20 24:00 0 - +Rule Iran 2009 2011 - Mar 21 24:00 1:00 - +Rule Iran 2009 2011 - Sep 21 24:00 0 - +Rule Iran 2012 only - Mar 20 24:00 1:00 - +Rule Iran 2012 only - Sep 20 24:00 0 - +Rule Iran 2013 2015 - Mar 21 24:00 1:00 - +Rule Iran 2013 2015 - Sep 21 24:00 0 - +Rule Iran 2016 only - Mar 20 24:00 1:00 - +Rule Iran 2016 only - Sep 20 24:00 0 - +Rule Iran 2017 2019 - Mar 21 24:00 1:00 - +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 2036 max - Mar 21 0:00 1:00 - -Rule Iran 2036 max - Sep 21 0:00 0 - +Rule Iran 2088 max - Mar 20 24:00 1:00 - +Rule Iran 2088 max - Sep 20 24:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Tehran 3:25:44 - LMT 1916 @@ -1691,7 +1878,9 @@ # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 9:00 Japan J%sT -# Since 1938, all Japanese possessions have been like Asia/Tokyo. +# Since 1938, all Japanese possessions have been like Asia/Tokyo, +# except that Truk (Chuuk), Ponape (Pohnpei), and Jaluit (Kosrae) did not +# switch from +10 to +09 until 1941-04-01; see the 'australasia' file. # Jordan # @@ -1981,8 +2170,10 @@ # and in Byalokoz) lists Ural river (plus 10 versts on its left bank) in # the third time belt (before 1930 this means +03). -# From Paul Eggert (2016-12-06): -# The tables below reflect Golosunov's remarks, with exceptions as noted. +# 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). # Zone NAME GMTOFF RULES FORMAT [UNTIL] # @@ -1996,8 +2187,6 @@ 6:00 RussiaAsia +06/+07 2004 Oct 31 2:00s 6:00 - +06 # Qyzylorda (aka Kyzylorda, Kizilorda, Kzyl-Orda, etc.) (KZ-KZY) -# This currently includes Qostanay (aka Kostanay, Kustanay) (KZ-KUS); -# see comments below. Zone Asia/Qyzylorda 4:21:52 - LMT 1924 May 2 4:00 - +04 1930 Jun 21 5:00 - +05 1981 Apr 1 @@ -2008,21 +2197,22 @@ 5:00 RussiaAsia +05/+06 1992 Jan 19 2:00s 6:00 RussiaAsia +06/+07 1992 Mar 29 2:00s 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s - 6:00 - +06 -# The following zone is like Asia/Qyzylorda except for being one -# hour earlier from 1991-09-29 to 1992-03-29. The 1991/2 rules for -# Qostanay are unclear partly because of the 1997 Turgai -# reorganization, so this zone is commented out for now. -#Zone Asia/Qostanay 4:14:20 - LMT 1924 May 2 -# 4:00 - +04 1930 Jun 21 -# 5:00 - +05 1981 Apr 1 -# 5:00 1:00 +06 1981 Oct 1 -# 6:00 - +06 1982 Apr 1 -# 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s -# 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s -# 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s -# 6:00 - +06 + 6:00 - +06 2018 Dec 21 0:00 + 5:00 - +05 # +# Qostanay (aka Kostanay, Kustanay) (KZ-KUS) +# The 1991/2 rules are unclear partly because of the 1997 Turgai +# reorganization. +Zone Asia/Qostanay 4:14:28 - LMT 1924 May 2 + 4:00 - +04 1930 Jun 21 + 5:00 - +05 1981 Apr 1 + 5:00 1:00 +06 1981 Oct 1 + 6:00 - +06 1982 Apr 1 + 5:00 RussiaAsia +05/+06 1991 Mar 31 2:00s + 4:00 RussiaAsia +04/+05 1992 Jan 19 2:00s + 5:00 RussiaAsia +05/+06 2004 Oct 31 2:00s + 6:00 - +06 + # Aqtöbe (aka Aktobe, formerly Aktyubinsk) (KZ-AKT) Zone Asia/Aqtobe 3:48:40 - LMT 1924 May 2 4:00 - +04 1930 Jun 21 @@ -2116,21 +2306,43 @@ # started at June 1 in that year. For another example, the article in # 1988 said that DST started at 2:00 AM in that year. +# From Phake Nick (2018-10-27): +# 1. According to official announcement from Korean government, the DST end +# date in South Korea should be +# 1955-09-08 without specifying time +# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027977557 +# 1956-09-29 without specifying time +# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027978341 +# 1957-09-21 24 o'clock +# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027979690#3 +# 1958-09-20 24 o'clock +# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027981189 +# 1959-09-19 24 o'clock +# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0027982974#2 +# 1960-09-17 24 o'clock +# http://theme.archives.go.kr/next/common/viewEbook.do?singleData=N&archiveEventId=0028044104 +# ... +# 2.... https://namu.wiki/w/대한민국%20표준시 ... [says] +# when Korea was using GMT+8:30 as standard time, the international +# aviation/marine/meteorological industry in the country refused to +# follow and continued to use GMT+9:00 for interoperability. + + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule ROK 1948 only - Jun 1 0:00 1:00 D -Rule ROK 1948 only - Sep 13 0:00 0 S -Rule ROK 1949 only - Apr 3 0:00 1:00 D -Rule ROK 1949 1951 - Sep Sun>=8 0:00 0 S -Rule ROK 1950 only - Apr 1 0:00 1:00 D -Rule ROK 1951 only - May 6 0:00 1:00 D -Rule ROK 1955 only - May 5 0:00 1:00 D -Rule ROK 1955 only - Sep 9 0:00 0 S -Rule ROK 1956 only - May 20 0:00 1:00 D -Rule ROK 1956 only - Sep 30 0:00 0 S -Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D -Rule ROK 1957 1960 - Sep Sun>=18 0:00 0 S -Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D -Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S +Rule ROK 1948 only - Jun 1 0:00 1:00 D +Rule ROK 1948 only - Sep 12 24:00 0 S +Rule ROK 1949 only - Apr 3 0:00 1:00 D +Rule ROK 1949 1951 - Sep Sat>=7 24:00 0 S +Rule ROK 1950 only - Apr 1 0:00 1:00 D +Rule ROK 1951 only - May 6 0:00 1:00 D +Rule ROK 1955 only - May 5 0:00 1:00 D +Rule ROK 1955 only - Sep 8 24:00 0 S +Rule ROK 1956 only - May 20 0:00 1:00 D +Rule ROK 1956 only - Sep 29 24:00 0 S +Rule ROK 1957 1960 - May Sun>=1 0:00 1:00 D +Rule ROK 1957 1960 - Sep Sat>=17 24:00 0 S +Rule ROK 1987 1988 - May Sun>=8 2:00 1:00 D +Rule ROK 1987 1988 - Oct Sun>=8 3:00 0 S # From Paul Eggert (2016-08-23): # The Korean Wikipedia entry gives the following sources for UT offsets: @@ -2920,6 +3132,11 @@ # no information # Philippines + +# From Paul Eggert (2018-11-18): +# The Spanish initially used American (west-of-Greenwich) time. +# It is unknown what time Manila kept when the British occupied it from +# 1762-10-06 through 1764-04; for now assume it kept American time. # On 1844-08-16, Narciso Clavería, governor-general of the # Philippines, issued a proclamation announcing that 1844-12-30 was to # be immediately followed by 1845-01-01; see R.H. van Gent's @@ -3005,8 +3222,8 @@ # going to run on Higgins Time.' And so, until last year, it did." See: # Antar E. Dinner at When? Saudi Aramco World, 1969 March/April. 2-3. # http://archive.aramcoworld.com/issue/196902/dinner.at.when.htm -# newspapers.com says a similar story about Higgins was published in the Port -# Angeles (WA) Evening News, 1965-03-10, page 5, but I lack access to the text. +# Also see: Antar EN. Arabian flying is confusing. +# Port Angeles (WA) Evening News. 1965-03-10. page 3. # # The TZ database cannot represent quasi-solar time; airline time is the best # we can do. The 1946 foreign air news digest of the U.S. Civil Aeronautics --- contrib/tzdata/australasia.orig +++ contrib/tzdata/australasia @@ -402,10 +402,44 @@ # it is uninhabited. # Guam + +# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +# http://guamlegislature.com/Public_Laws_5th/PL05-025.pdf +# http://documents.guam.gov/wp-content/uploads/E.O.-59-7-Guam-Daylight-Savings-Time-May-6-1959.pdf +Rule Guam 1959 only - Jun 27 2:00 1:00 D +# http://documents.guam.gov/wp-content/uploads/E.O.-61-5-Revocation-of-Daylight-Saving-Time-and-Restoratio.pdf +Rule Guam 1961 only - Jan 29 2:00 0 S +# http://documents.guam.gov/wp-content/uploads/E.O.-67-13-Guam-Daylight-Savings-Time.pdf +Rule Guam 1967 only - Sep 1 2:00 1:00 D +# http://documents.guam.gov/wp-content/uploads/E.O.-69-2-Repeal-of-Guam-Daylight-Saving-Time.pdf +Rule Guam 1969 only - Jan 26 0:01 0 S +# http://documents.guam.gov/wp-content/uploads/E.O.-69-10-Guam-Daylight-Saving-Time.pdf +Rule Guam 1969 only - Jun 22 2:00 1:00 D +Rule Guam 1969 only - Aug 31 2:00 0 S +# http://documents.guam.gov/wp-content/uploads/E.O.-70-10-Guam-Daylight-Saving-Time.pdf +# http://documents.guam.gov/wp-content/uploads/E.O.-70-30-End-of-Guam-Daylight-Saving-Time.pdf +# http://documents.guam.gov/wp-content/uploads/E.O.-71-5-Guam-Daylight-Savings-Time.pdf +Rule Guam 1970 1971 - Apr lastSun 2:00 1:00 D +Rule Guam 1970 1971 - Sep Sun>=1 2:00 0 S +# http://documents.guam.gov/wp-content/uploads/E.O.-73-28.-Guam-Day-light-Saving-Time.pdf +Rule Guam 1973 only - Dec 16 2:00 1:00 D +# http://documents.guam.gov/wp-content/uploads/E.O.-74-7-Guam-Daylight-Savings-Time-Rescinded.pdf +Rule Guam 1974 only - Feb 24 2:00 0 S +# http://documents.guam.gov/wp-content/uploads/E.O.-76-13-Daylight-Savings-Time.pdf +Rule Guam 1976 only - May 26 2:00 1:00 D +# http://documents.guam.gov/wp-content/uploads/E.O.-76-25-Revocation-of-E.O.-76-13.pdf +Rule Guam 1976 only - Aug 22 2:01 0 S +# http://documents.guam.gov/wp-content/uploads/E.O.-77-4-Daylight-Savings-Time.pdf +Rule Guam 1977 only - Apr 24 2:00 1:00 D +# http://documents.guam.gov/wp-content/uploads/E.O.-77-18-Guam-Standard-Time.pdf +Rule Guam 1977 only - Aug 28 2:00 0 S + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31 9:39:00 - LMT 1901 # Agana - 10:00 - GST 2000 Dec 23 # Guam + 10:00 - GST 1941 Dec 10 # Guam + 9:00 - +09 1944 Jul 31 + 10:00 Guam G%sT 2000 Dec 23 10:00 - ChST # Chamorro Standard Time Link Pacific/Guam Pacific/Saipan # N Mariana Is @@ -427,31 +461,56 @@ # Marshall Is # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Majuro 11:24:48 - LMT 1901 - 11:00 - +11 1969 Oct - 12:00 - +12 -Zone Pacific/Kwajalein 11:09:20 - LMT 1901 - 11:00 - +11 1969 Oct - -12:00 - -12 1993 Aug 20 - 12:00 - +12 +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 + 9:00 - +09 1944 Feb 6 + 11:00 - +11 1969 Oct + -12:00 - -12 1993 Aug 20 24:00 + 12:00 - +12 # Micronesia # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Chuuk 10:07:08 - LMT 1901 - 10:00 - +10 -Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia - 11:00 - +11 -Zone Pacific/Kosrae 10:51:56 - LMT 1901 - 11:00 - +11 1969 Oct - 12:00 - +12 1999 - 11:00 - +11 +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 + 9:00 - +09 1919 Feb 1 + 11:00 - +11 1937 + 10:00 - +10 1941 Apr 1 + 9:00 - +09 1945 Aug + 11:00 - +11 1969 Oct + 12:00 - +12 1999 + 11:00 - +11 # Nauru # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Nauru 11:07:40 - LMT 1921 Jan 15 # Uaobe - 11:30 - +1130 1942 Mar 15 - 9:00 - +09 1944 Aug 15 - 11:30 - +1130 1979 May + 11:30 - +1130 1942 Aug 29 + 9:00 - +09 1945 Sep 8 + 11:30 - +1130 1979 Feb 10 2:00 12:00 - +12 # New Caledonia @@ -552,8 +611,9 @@ # Palau (Belau) # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror - 9:00 - +09 +Zone Pacific/Palau -15:02:04 - LMT 1844 Dec 31 # Koror + 8:57:56 - LMT 1901 + 9:00 - +09 # Papua New Guinea # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -815,7 +875,7 @@ # tz@iana.org for general use in the future). For more, please see # the file CONTRIBUTING in the tz distribution. -# From Paul Eggert (2017-02-10): +# From Paul Eggert (2018-11-18): # # Unless otherwise specified, the source for data through 1990 is: # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition), @@ -840,6 +900,7 @@ # A reliable and entertaining source about time zones is # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). # +# I invented the abbreviation marked "*". # The following abbreviations are from other sources. # Corrections are welcome! # std dst @@ -847,7 +908,7 @@ # 8:00 AWST AWDT Western Australia # 9:30 ACST ACDT Central Australia # 10:00 AEST AEDT Eastern Australia -# 10:00 GST Guam through 2000 +# 10:00 GST GDT* Guam through 2000 # 10:00 ChST Chamorro # 11:30 NZMT NZST New Zealand through 1945 # 12:00 NZST NZDT New Zealand 1946-present @@ -1546,28 +1607,70 @@ # Kwajalein -# In comp.risks 14.87 (26 August 1993), Peter Neumann writes: -# I wonder what happened in Kwajalein, where there was NO Friday, -# 1993-08-20. Thursday night at midnight Kwajalein switched sides with -# respect to the International Date Line, to rejoin its fellow islands, -# going from 11:59 p.m. Thursday to 12:00 m. Saturday in a blink. +# From an AP article (1993-08-22): +# "The nearly 3,000 Americans living on this remote Pacific atoll have a good +# excuse for not remembering Saturday night: there wasn't one. Residents were +# going to bed Friday night and waking up Sunday morning because at midnight +# -- 8 A.M. Eastern daylight time on Saturday -- Kwajalein was jumping from +# one side of the international date line to the other." +# "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 +# 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" +# . +# Given that Shanks was right on the money about the 1993 change, I'm inclined +# to take Shanks's word for the 1969 change unless we find better evidence. # N Mariana Is, Guam +# From Phake Nick (2018-10-27): +# Guam Island was briefly annexed by Japan during ... year 1941-1944 ... +# however there are no detailed information about what time it use during that +# period. It would probably be reasonable to assume Guam use GMT+9 during +# that period of time like the surrounding area. + +# From Paul Eggert (2018-11-18): # Howse writes (p 153) "The Spaniards, on the other hand, reached the # Philippines and the Ladrones from America," and implies that the Ladrones # (now called the Marianas) kept American date for quite some time. # For now, we assume the Ladrones switched at the same time as the Philippines; # see Asia/Manila. - +# +# Use 1941-12-10 and 1944-07-31 for Guam WWII transitions, as the rough start +# and end of Japanese control of Agana. We don't know whether the Northern +# Marianas followed Guam's DST rules from 1959 through 1977; for now, assume +# they did as that avoids the need for a separate zone due to our 1970 cutoff. +# # US Public Law 106-564 (2000-12-23) made UT +10 the official standard time, # under the name "Chamorro Standard Time". There is no official abbreviation, # but Congressman Robert A. Underwood, author of the bill that became law, # wrote in a press release (2000-12-27) that he will seek the use of "ChST". +# See also the commentary for Micronesia. -# Micronesia + +# Marshall Is +# See the commentary for Micronesia. + + +# Micronesia (and nearby) + +# From Paul Eggert (2018-11-18): +# 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' @@ -1583,6 +1686,95 @@ # that Truk and Yap are UT +10, and Ponape and Kosrae are +11. # We don't know when Kosrae switched from +12; assume January 1 for now. +# From Phake Nick (2018-10-27): +# +# From a Japanese wiki site https://wiki.suikawiki.org/n/南洋群島の標準時 +# ... +# For "Southern Islands" (modern region of Mariana + Palau + Federation of +# Micronesia + Marshall Islands): +# +# A 1906 Japanese magazine shown the Caroline Islands and Mariana Islands +# who was occupied by Germany at the time as GMT+10, together with the like +# of German New Guinea. However there is a marking saying it have not been +# implemented (yet). No further information after that were found. +# +# Japan invaded those islands in 1914, and records shows that they were +# instructed to use JST at the time. +# +# 1915 January telecommunication record on the Jaluit Atoll shows they use +# the meridian of 170E as standard time (GMT+11:20), which is similar to the +# longitude of the atoll. +# 1915 February record say the 170E standard time is to be used until +# February 9 noon, and after February 9 noon they are to use JST. +# However these are time used within the Japanese Military at the time and +# probably does not reflect the time used by local resident at the time (that +# is if they keep their own time back then) +# +# In January 1919 the occupying force issued a command that split the area +# into three different timezone with meridian of 135E, 150E, 165E (JST+0, +1, +# +2), and the command was to become effective from February 1 of the same +# year. Despite the target of the command is still only for the occupying +# force itself, further publication have described the time as the standard +# time for the occupied area and thus it can probably be seen as such. +# * Area that use meridian of 135E: Palau and Yap civil administration area +# (Southern Islands Western Standard Time) +# * Area that use meridian of 150E: Truk (Chuuk) and Saipan civil +# administration area (Southern Islands Central Standard Time) +# * Area that use meridian of 165E: Ponape (Pohnpei) and Jaluit civil +# administration area (Southern Islands Eastern Standard Time). +# * In the next few years Japanese occupation of those islands have been +# formalized via League of Nation Mandate (South Pacific Mandate) and formal +# governance structure have been established, these district [become +# subprefectures] and timezone classification have been inherited as standard +# time of the area. +# * Saipan subprefecture include Mariana islands (exclude Guam which was +# occupied by America at the time), Palau and Yap subprefecture rule the +# Western Caroline Islands with 137E longitude as border, Truk and Ponape +# subprefecture rule the Eastern Caroline Islands with 154E as border, Ponape +# subprefecture also rule part of Marshall Islands to the west of 164E +# starting from (1918?) and Jaluit subprefecture rule the rest of the +# Marshall Islands. +# +# And then in year 1937, an announcement was made to change the time in the +# area into 2 timezones: +# * Area that use meridian of 135E: area administered by Palau, Yap and +# Saipan subprefecture (Southern Islands Western Standard Time) +# * Area that use meridian of 150E: area administered by Truk (Chuuk), +# Ponape (Pohnpei) and Jaluit subprefecture (Southern Islands Eastern +# Standard Time) +# +# Another announcement issued in 1941 say that on April 1 that year, +# standard time of the Southern Islands would be changed to use the meridian +# of 135E (GMT+9), and thus abolishing timezone different within the area. +# +# Then Pacific theater of WWII started and Japan slowly lose control on the +# island. The webpage I linked above contain no information during this +# period of time.... +# +# After the end of WWII, in 1946 February, a document written by the +# (former?) Japanese military personnel describe there are 3 hours time +# different between Caroline islands time/Wake island time and the Chungking +# time, which would mean the time being used there at the time was GMT+10. +# +# After that, the area become Trust Territories of the Pacific Islands +# under American administration from year 1947. The site listed some +# American/International books/maps/publications about time used in those +# area during this period of time but they doesn't seems to be reliable +# information so it would be the best if someone know where can more reliable +# information can be found. +# +# +# From Paul Eggert (2018-11-18): +# +# For the above, use vague dates like "1914" and "1945" for transitions that +# plausibly exist but for which the details are not known. The information +# for Wake is too sketchy to act on. +# +# The 1906 GMT+10 info about German-controlled islands might not have been +# done, so omit it from the data for now. +# +# The Jaluit info governs Kwajalein. + # Midway @@ -1600,6 +1792,29 @@ # started DST on June 3. Possibly DST was observed other years # in Midway, but we have no record of it. +# Nauru + +# From Phake Nick (2018-10-31): +# Currently, the tz database say Nauru use LMT until 1921, and then +# switched to GMT+11:30 for the next two decades. +# However, a number of timezone map published in America/Japan back then +# showed its timezone as GMT+11 per https://wiki.suikawiki.org/n/ナウルの標準時 +# And it would also be nice if the 1921 transition date could be sourced. +# ... +# The "Nauru Standard Time Act 1978 Time Change" +# http://ronlaw.gov.nr/nauru_lpms/files/gazettes/4b23a17d2030150404db7a5fa5872f52.pdf#page=3 +# based on "Nauru Standard Time Act 1978 Time Change" +# http://www.paclii.org/nr/legis/num_act/nsta1978207/ defined that "Nauru +# Alternative Time" (GMT+12) should be in effect from 1979 Feb. +# +# From Paul Eggert (2018-11-19): +# The 1921-01-15 introduction of standard time is in Shanks; it is also in +# "Standard Time Throughout the World", US National Bureau of Standards (1935), +# page 3, which does not give the UT offset. In response to a comment by +# Phake Nick I set the Nauru time of occupation by Japan to +# 1942-08-29/1945-09-08 by using dates from: +# https://en.wikipedia.org/wiki/Japanese_occupation_of_Nauru + # Norfolk # From Alexander Krivenyshev (2015-09-23): @@ -1615,6 +1830,9 @@ # other than in 1974/5. See: # https://www.timeanddate.com/time/australia/norfolk-island.html +# Palau +# See commentary for Micronesia. + # Pitcairn # From Rives McDow (1999-11-08): @@ -1779,6 +1997,9 @@ # 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/leapseconds.orig +++ contrib/tzdata/leapseconds @@ -19,9 +19,12 @@ # See: Levine J. Coordinated Universal Time and the leap second. # URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995 # . + # There were no leap seconds before 1972, because the official mechanism # accounting for the discrepancy between atomic time and the earth's rotation -# did not exist. +# did not exist. The first ("1 Jan 1972") data line in leap-seconds.list +# does not denote a leap second; it denotes the start of the current definition +# of UTC. # The correction (+ or -) is made at the given time, so lines # will typically look like: --- contrib/tzdata/leapseconds.awk.orig +++ contrib/tzdata/leapseconds.awk @@ -24,9 +24,12 @@ print "# See: Levine J. Coordinated Universal Time and the leap second." print "# URSI Radio Sci Bull. 2016;89(4):30-6. doi:10.23919/URSIRSB.2016.7909995" print "# ." + print "" print "# There were no leap seconds before 1972, because the official mechanism" print "# accounting for the discrepancy between atomic time and the earth's rotation" - print "# did not exist." + print "# did not exist. The first (\"1 Jan 1972\") data line in leap-seconds.list" + print "# does not denote a leap second; it denotes the start of the current definition" + print"# of UTC." print "" print "# The correction (+ or -) is made at the given time, so lines" print "# will typically look like:" --- contrib/tzdata/northamerica.orig +++ contrib/tzdata/northamerica @@ -599,6 +599,17 @@ # between AKST and AKDT from now on.... # https://www.krbd.org/2015/10/30/annette-island-times-they-are-a-changing/ +# From Ryan Stanley (2018-11-06): +# The Metlakatla community in Alaska has decided not to change its +# clock back an hour starting on November 4th, 2018 (day before yesterday). +# They will be gmtoff=-28800 year-round. +# https://www.facebook.com/141055983004923/photos/pb.141055983004923.-2207520000.1541465673./569081370202380/ + +# From Paul Eggert (2018-12-16): +# In a 2018-12-11 special election, Metlakatla voted to go back to +# Alaska time (including daylight saving time) starting next year. +# https://www.krbd.org/2018/12/12/metlakatla-to-follow-alaska-standard-time-allow-liquor-sales/ + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Juneau 15:02:19 - LMT 1867 Oct 19 15:33:32 -8:57:41 - LMT 1900 Aug 20 12:00 @@ -625,6 +636,8 @@ -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 -8:00 - PST 2015 Nov 1 2:00 + -9:00 US AK%sT 2018 Nov 4 2:00 + -8:00 - PST 2019 Mar Sun>=8 3:00 -9:00 US AK%sT Zone America/Yakutat 14:41:05 - LMT 1867 Oct 19 15:12:18 -9:18:55 - LMT 1900 Aug 20 12:00 @@ -785,6 +798,22 @@ # For a map of Indiana's time zone regions, see: # https://en.wikipedia.org/wiki/Time_in_Indiana # +# From Paul Eggert (2018-11-30): +# A brief but entertaining history of time in Indiana describes a 1949 debate +# in the Indiana House where city legislators (who favored "fast time") +# tussled with farm legislators (who didn't) over a bill to outlaw DST: +# "Lacking enough votes, the city faction tries to filibuster until time runs +# out on the session at midnight, but rural champion Rep. Herbert Copeland, +# R-Madison, leans over the gallery railing and forces the official clock +# back to 9 p.m., breaking it in the process. The clock sticks on 9 as the +# debate rages on into the night. The filibuster finally dies out and the +# bill passes, while outside the chamber, clocks read 3:30 a.m. In the end, +# it doesn't matter which side won. The law has no enforcement powers and +# is simply ignored by fast-time communities." +# How Indiana went from 'God's time' to split zones and daylight-saving. +# Indianapolis Star. 2018-11-27 14:58 -05. +# https://www.indystar.com/story/news/politics/2018/11/27/indianapolis-indiana-time-zone-history-central-eastern-daylight-savings-time/2126300002/ +# # From Paul Eggert (2007-08-17): # Since 1970, most of Indiana has been like America/Indiana/Indianapolis, # with the following exceptions: --- contrib/tzdata/theory.html.orig +++ contrib/tzdata/theory.html @@ -406,7 +406,7 @@ EAT East Africa, EST/EDT/EWT/EPT/EDDT Eastern [North America], EET/EEST Eastern European, - GST Guam, + GST/GDT Guam, HST/HDT/HWT/HPT Hawaii, HKT/HKST Hong Kong, IST India, @@ -1238,7 +1238,7 @@ use Mars time. Jet Propulsion Laboratory (JPL) coordinators kept Mars time on and off during the -Mars +Mars Pathfinder mission. Some of their family members also adapted to Mars time. Dozens of special Mars watches were built for JPL workers who kept @@ -1261,8 +1261,7 @@ honor of the British astronomer who built the Greenwich telescope that defines Earth's prime meridian. Mean solar time on the Mars prime meridian is -called Mars -Coordinated Time (MTC). +called Mars Coordinated Time (MTC).

--- contrib/tzdata/version.orig +++ contrib/tzdata/version @@ -1 +1 @@ -2018g +2018i --- contrib/tzdata/ziguard.awk.orig +++ contrib/tzdata/ziguard.awk @@ -54,7 +54,7 @@ } } - # If this line should differ due to Namibia using Rule SAVE suffixes, + # If this line should differ due to Namibia using negative SAVE values, # uncomment the desired version and comment out the undesired one. Rule_Namibia = /^#?Rule[\t ]+Namibia[\t ]/ Zone_using_Namibia_rule \ @@ -87,6 +87,23 @@ sub(/Sat>=8/, "Sun>=9") sub(/25:00/, " 1:00") } + + # 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") + } + if (!vanguard && $1 == "Rule" && $2 == "Morocco" && 2019 <= $3) { + if ($9 == "0") { + sub(/\t0\t/, "\t1:00\t") + } else { + sub(/\t-1:00\t/, "\t0\t") + } + } + if (!vanguard && $1 == "1:00" && $2 == "Morocco" && $3 == "+01/+00") { + sub(/1:00\tMorocco\t\+01\/\+00$/, "0:00\tMorocco\t+00/+01") + } } # If a Link line is followed by a Zone line for the same data, comment --- contrib/tzdata/zone.tab.orig +++ contrib/tzdata/zone.tab @@ -239,6 +239,7 @@ KY +1918-08123 America/Cayman KZ +4315+07657 Asia/Almaty Kazakhstan (most areas) KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda +KZ +5312+06337 Asia/Qostanay Qostanay/Kostanay/Kustanay KZ +5017+05710 Asia/Aqtobe Aqtobe/Aktobe KZ +4431+05016 Asia/Aqtau Mangghystau/Mankistau KZ +4707+05156 Asia/Atyrau Atyrau/Atirau/Gur'yev @@ -332,9 +333,9 @@ RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area RU +4457+03406 Europe/Simferopol MSK+00 - Crimea -RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd RU +5836+04939 Europe/Kirov MSK+00 - Kirov RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan +RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd RU +5134+04602 Europe/Saratov MSK+01 - Saratov RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk RU +5312+05009 Europe/Samara MSK+01 - Samara, Udmurtia --- contrib/tzdata/zone1970.tab.orig +++ contrib/tzdata/zone1970.tab @@ -212,6 +212,7 @@ KR +3733+12658 Asia/Seoul KZ +4315+07657 Asia/Almaty Kazakhstan (most areas) KZ +4448+06528 Asia/Qyzylorda Qyzylorda/Kyzylorda/Kzyl-Orda +KZ +5312+06337 Asia/Qostanay Qostanay/Kostanay/Kustanay KZ +5017+05710 Asia/Aqtobe Aqtöbe/Aktobe KZ +4431+05016 Asia/Aqtau Mangghystaū/Mankistau KZ +4707+05156 Asia/Atyrau Atyraū/Atirau/Gur'yev @@ -290,9 +291,9 @@ RU +5443+02030 Europe/Kaliningrad MSK-01 - Kaliningrad RU +554521+0373704 Europe/Moscow MSK+00 - Moscow area RU +4457+03406 Europe/Simferopol MSK+00 - Crimea -RU +4844+04425 Europe/Volgograd MSK+00 - Volgograd RU +5836+04939 Europe/Kirov MSK+00 - Kirov RU +4621+04803 Europe/Astrakhan MSK+01 - Astrakhan +RU +4844+04425 Europe/Volgograd MSK+01 - Volgograd RU +5134+04602 Europe/Saratov MSK+01 - Saratov RU +5420+04824 Europe/Ulyanovsk MSK+01 - Ulyanovsk RU +5312+05009 Europe/Samara MSK+01 - Samara, Udmurtia