Branch: Tag:

2018-09-05

2018-09-05 12:35:43 by Henrik Grubbström (Grubba) <grubba@grubba.org>

Calendar: Revert broken tzdata change in previous commit.

6:   # tz@iana.org for general use in the future). For more, please see   # the file CONTRIBUTING in the tz distribution.    - # From Paul Eggert (2017-02-20): + # From Paul Eggert (2017-04-09):   #   # Unless otherwise specified, the source for data through 1990 is:   # Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
52:   # cannot now come up with solid citations.   #   # I invented the following abbreviations; corrections are welcome! - # +02 WAST West Africa Summer Time + # +02 WAST West Africa Summer Time (no longer used)   # +03 CAST Central Africa Summer Time (no longer used)   # +03 SAST South Africa Summer Time (no longer used)   # +03 EAT East Africa Time
115:      # Cape Verde / Cabo Verde   # + # From Paul Eggert (2018-02-16):   # Shanks gives 1907 for the transition to +02. - # Perhaps the 1911-05-26 Portuguese decree - # https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf - # merely made it official? + # For now, ignore that and follow the 1911-05-26 Portuguese decree + # (see Europe/Lisbon).   #   # Zone NAME GMTOFF RULES FORMAT [UNTIL] - Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia + Zone Atlantic/Cape_Verde -1:34:04 - LMT 1912 Jan 01 2:00u # Praia    -2:00 - -02 1942 Sep    -2:00 1:00 -01 1945 Oct 15    -2:00 - -02 1975 Nov 25 2:00
158:   Link Africa/Abidjan Africa/Lome # Togo   Link Africa/Abidjan Africa/Nouakchott # Mauritania   Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso - Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe +    Link Africa/Abidjan Atlantic/St_Helena # St Helena      # Djibouti
371:   # See Africa/Abidjan.      # Ghana - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S +  + # From Paul Eggert (2018-01-30):   # Whitman says DST was observed from 1931 to "the present"; - # Shanks & Pottenger say 1936 to 1942; - # and September 1 to January 1 is given by: - # Scott Keltie J, Epstein M (eds), The Statesman's Year-Book, - # 57th ed. Macmillan, London (1920), OCLC 609408015, pp xxviii. - # For lack of better info, assume DST was observed from 1920 to 1942. - Rule Ghana 1920 1942 - Sep 1 0:00 0:20 GHST - Rule Ghana 1920 1942 - Dec 31 0:00 0 GMT + # Shanks & Pottenger say 1936 to 1942 with 20 minutes of DST, + # with transitions on 09-01 and 12-31 at 00:00. + # Page 33 of Parish GCB, Colonial Reports - Annual. No. 1066. Gold + # Coast. Report for 1919. (March 1921), OCLC 784024077 + # http://libsysdigi.library.illinois.edu/ilharvest/africana/books2011-05/5530214/5530214_1919/5530214_1919_opt.pdf + # lists the Determination of the Time Ordinance, 1919, No. 18, + # "to advance the time observed locally by the space of twenty minutes + # during the last four months of each year; the object in view being + # to extend during those months the period of daylight-time available + # for evening recreation after office hours." + # Vanessa Ogle, The Global Transformation of Time, 1870-1950 (2015), p 33, + # writes "In 1919, the Gold Coast (Ghana as of 1957) made Greenwich + # time its legal time and simultaneously legalized a summer time of + # UTC - 00:20 minutes from March to October."; a footnote lists + # the ordinance as being dated 1919-11-24. + # The Crown Colonist, Volume 12 (1942), p 176, says "the Government + # intend advancing Gold Coast time half an hour ahead of G.M.T. + # The actual date of the alteration has not yet been announced." + # These sources are incomplete and contradictory. Possibly what is + # now Ghana observed different DST regimes in different years. For + # lack of better info, use Shanks except treat the minus sign as a + # typo, and assume DST started in 1920 not 1936. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Ghana 1920 1942 - Sep 1 0:00 0:20 - + Rule Ghana 1920 1942 - Dec 31 0:00 0 -   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone Africa/Accra -0:00:52 - LMT 1918    0:00 Ghana GMT/+0020
389:      # Guinea-Bissau   # + # From Paul Eggert (2018-02-16):   # Shanks gives 1911-05-26 for the transition to WAT,   # evidently confusing the date of the Portuguese decree - # https://dre.pt/pdf1sdip/1911/05/12500/23132313.pdf - # with the date that it took effect, namely 1912-01-01. + # (see Europe/Lisbon) with the date that it took effect.   #   # Zone NAME GMTOFF RULES FORMAT [UNTIL] - Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 + Zone Africa/Bissau -1:02:20 - LMT 1912 Jan 1 1:00u    -1:00 - -01 1975    0:00 - GMT   
425:   #   # The Nautical Almanac for the Year 1970, p 264, is the source for -0:44:30.   # - # In 1972 Liberia was the last country to switch from a UTC offset + # In 1972 Liberia was the last country to switch from a UT offset   # that was not a multiple of 15 or 20 minutes. The 1972 change was on   # 1972-01-07, according to an entry dated 1972-01-04 on p 330 of:   # Presidential Papers: First year of the administration of
591:   # at 2am (or 02:00) local time..."      # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Mauritius 1982 only - Oct 10 0:00 1:00 S + Rule Mauritius 1982 only - Oct 10 0:00 1:00 -   Rule Mauritius 1983 only - Mar 21 0:00 0 - - Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 S + Rule Mauritius 2008 only - Oct lastSun 2:00 1:00 -   Rule Mauritius 2009 only - Mar lastSun 2:00 0 -   # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis
949:   # commence at OOhOO on Monday 21 March 1994 and shall end at 02h00 on   # Sunday 4 September 1994.    + # From Michael Deckers (2017-04-06): + # ... both summer and winter time are called "standard" + # (which differs from the use in Ireland) ... +    # From Petronella Sibeene (2007-03-30):   # http://allafrica.com/stories/200703300178.html   # While the entire country changes its time, Katima Mulilo and other
974:   # the same time they would normally start DST, the first Sunday in September:   # https://www.timeanddate.com/news/time/namibia-new-time-zone.html    + # From Paul Eggert (2017-04-09): + # Before the change, summer and winter time were both standard time legally. + # However in common parlance, winter time was considered to be DST. See, e.g.: + # http://www.nbc.na/news/namibias-winter-time-could-be-scrapped.2706 + # https://zone.my.na/news/times-are-changing-in-namibia + # https://www.newera.com.na/2017/02/23/namibias-winter-time-might-be-repealed/ + # Use plain "WAT" and "CAT" for the time zone abbreviations, to be compatible + # with Namibia's neighbors. +    # RULE NAME FROM TO TYPE IN ON AT SAVE LETTER/S - Rule Namibia 1994 only - Mar 21 0:00 0 - - Rule Namibia 1994 2016 - Sep Sun>=1 2:00 1:00 S - Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 - + # Vanguard section, for zic and other parsers that support negative DST. + Rule Namibia 1994 only - Mar 21 0:00 -1:00 WAT + Rule Namibia 1994 2017 - Sep Sun>=1 2:00 0 CAT + Rule Namibia 1995 2017 - Apr Sun>=1 2:00 -1:00 WAT + # Rearguard section, for parsers that do not support negative DST. + #Rule Namibia 1994 only - Mar 21 0:00 0 WAT + #Rule Namibia 1994 2017 - Sep Sun>=1 2:00 1:00 CAT + #Rule Namibia 1995 2017 - Apr Sun>=1 2:00 0 WAT + # End of rearguard section. +    # Zone NAME GMTOFF RULES FORMAT [UNTIL]   Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8    1:30 - +0130 1903 Mar    2:00 - SAST 1942 Sep 20 2:00    2:00 1:00 SAST 1943 Mar 21 2:00    2:00 - SAST 1990 Mar 21 # independence -  2:00 - CAT 1994 Mar 21 0:00 -  1:00 Namibia WA%sT 2017 Sep 3 2:00 -  2:00 - CAT + # Vanguard section, for zic and other parsers that support negative DST. +  2:00 Namibia %s + # Rearguard section, for parsers that do not support negative DST. + # 2:00 - CAT 1994 Mar 21 0:00 + # From Paul Eggert (2017-04-07): + # The official date of the 2017 rule change was 2017-10-24. See: + # http://www.lac.org.na/laws/annoSTAT/Namibian%20Time%20Act%209%20of%202017.pdf + # 1:00 Namibia %s 2017 Oct 24 + # 2:00 - CAT + # End of rearguard section.      # Niger   # See Africa/Lagos.
1037:   # Inaccessible, Nightingale: uninhabited      # São Tomé and Príncipe +  + # See Europe/Lisbon for info about the 1912 transition. +  + # From Steffen Thorsen (2018-01-08): + # Multiple sources tell that São Tomé changed from UTC to UTC+1 as + # they entered the year 2018. + # From Michael Deckers (2018-01-08): + # 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 +  + 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 +    # Senegal   # See Africa/Abidjan.