Branch: Tag:

2019-01-08

2019-01-08 10:53:04 by Henrik Grubbström (Grubba) <grubba@grubba.org>

Updated to tzdata2018i.

586:   # 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. + # <https://www.hko.gov.hk/publica/gen_pub/timeball_atomic_clock.pdf> + # "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 <https://books.google.com/books?id=kgw5AQAAMAAJ&pg=RA4-PA4> + # ... 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 <https://mmis.hkpl.gov.hk> 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:   # 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:   # 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:   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:      # 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:   # 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:   # 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 - + 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 2038. - # These are the best post-2037 approximations available, given the - # restrictions of a single rule using a Gregorian-based data format. + # 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:   # 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:   # 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:    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:    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:   # 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:   # 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:   # 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