Branch: Tag:

2000-08-01

2000-08-01 16:49:56 by Mirar (Pontus Hagland) <pike@sort.mirar.org>

runtime-compile timezones instead of loading them all

Rev: lib/modules/Calendar.pmod/Ruleset.pike:1.2
Rev: lib/modules/Calendar.pmod/Time.pmod:1.2
Rev: lib/modules/Calendar.pmod/TimeRanges.pmod:1.2
Rev: lib/modules/Calendar.pmod/Timezone.pmod:1.2
Rev: lib/modules/Calendar.pmod/module.pmod:1.2
Rev: lib/modules/Calendar.pmod/tzdata/africa:1.1
Rev: lib/modules/Calendar.pmod/tzdata/antarctica:1.1
Rev: lib/modules/Calendar.pmod/tzdata/asia:1.1
Rev: lib/modules/Calendar.pmod/tzdata/australasia:1.1
Rev: lib/modules/Calendar.pmod/tzdata/backward:1.1
Rev: lib/modules/Calendar.pmod/tzdata/etcetera:1.1
Rev: lib/modules/Calendar.pmod/tzdata/europe:1.1
Rev: lib/modules/Calendar.pmod/tzdata/factory:1.1
Rev: lib/modules/Calendar.pmod/tzdata/iso3166.tab:1.1
Rev: lib/modules/Calendar.pmod/tzdata/leapseconds:1.1
Rev: lib/modules/Calendar.pmod/tzdata/northamerica:1.1
Rev: lib/modules/Calendar.pmod/tzdata/pacificnew:1.1
Rev: lib/modules/Calendar.pmod/tzdata/solar87:1.1
Rev: lib/modules/Calendar.pmod/tzdata/solar88:1.1
Rev: lib/modules/Calendar.pmod/tzdata/solar89:1.1
Rev: lib/modules/Calendar.pmod/tzdata/southamerica:1.1
Rev: lib/modules/Calendar.pmod/tzdata/systemv:1.1
Rev: lib/modules/Calendar.pmod/tzdata/yearistype.sh:1.1
Rev: lib/modules/Calendar.pmod/tzdata/zone.tab:1.1

1: + # @(#)southamerica 7.35    -  + # This data is by no means authoritative; if you think you know better, + # go ahead and edit the file (and please send any changes to + # tz@elsie.nci.nih.gov for general use in the future). +  + # From Paul Eggert <eggert@twinsun.com> (1999-07-07): + # A good source for time zone historical data outside the U.S. is + # Thomas G. Shanks, The International Atlas (5th edition), + # San Diego: ACS Publications, Inc. (1999). + # + # Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source + # for recent time zone data is the International Air Transport + # Association's Standard Schedules Information Manual (IATA SSIM), + # published semiannually. Law sent in several helpful summaries + # of the IATA's data after 1990. + # + # Except where otherwise noted, Shanks is the source for entries through 1990, + # and IATA SSIM is the source for entries after 1990. + # + # Earlier editions of these tables used the North American style (e.g. ARST and + # ARDT for Argentine Standard and Daylight Time), but the following quote + # suggests that it's better to use European style (e.g. ART and ARST). + # I suggest the use of _Summer time_ instead of the more cumbersome + # _daylight-saving time_. _Summer time_ seems to be in general use + # in Europe and South America. + # -- E O Cutler, _New York Times_ (1937-02-14), quoted in + # H L Mencken, _The American Language: Supplement I_ (1960), p 466 + # + # Earlier editions of these tables also used the North American style + # for time zones in Brazil, but this was incorrect, as Brazilians say + # "summer time". Reinaldo Goulart, a Sao Paulo businessman active in + # the railroad sector, writes (1999-07-06): + # The subject of time zones is currently a matter of discussion/debate in + # Brazil. Let's say that "the Brasilia time" is considered the + # "official time" because Brasilia is the capital city. + # The other three time zones are called "Brasilia time "minus one" or + # "plus one" or "plus two". As far as I know there is no such + # name/designation as "Eastern Time" or "Central Time". + # So I invented the following (English-language) abbreviations for now. + # Corrections are welcome! + # std dst + # -2:00 FNT FNST Fernando de Noronha + # -3:00 BRT BRST Brasilia + # -4:00 AMT AMST Amazon + # -5:00 ACT ACST Acre +  + ############################################################################### +  + ############################################################################### +  + # Argentina +  + # From Bob Devine (1988-01-28): + # Argentina: first Sunday in October to first Sunday in April since 1976. + # Double Summer time from 1969 to 1974. Switches at midnight. +  + # From U. S. Naval Observatory (1988-01-199): + # ARGENTINA 3 H BEHIND UTC +  + # From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): + # I am sending modifications to the Argentine time zone table... + # AR was chosen because they are the ISO letters that represent Argentina. +  + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Arg 1930 only - Dec 1 0:00 1:00 S + Rule Arg 1931 only - Apr 1 0:00 0 - + Rule Arg 1931 only - Oct 15 0:00 1:00 S + Rule Arg 1932 1940 - Mar 1 0:00 0 - + Rule Arg 1932 1939 - Nov 1 0:00 1:00 S + Rule Arg 1940 only - Jul 1 0:00 1:00 S + Rule Arg 1941 only - Jun 15 0:00 0 - + Rule Arg 1941 only - Oct 15 0:00 1:00 S + Rule Arg 1943 only - Aug 1 0:00 0 - + Rule Arg 1943 only - Oct 15 0:00 1:00 S + Rule Arg 1946 only - Mar 1 0:00 0 - + Rule Arg 1946 only - Oct 1 0:00 1:00 S + Rule Arg 1963 only - Oct 1 0:00 0 - + Rule Arg 1963 only - Dec 15 0:00 1:00 S + Rule Arg 1964 1966 - Mar 1 0:00 0 - + Rule Arg 1964 1966 - Oct 15 0:00 1:00 S + Rule Arg 1967 only - Apr 1 0:00 0 - + Rule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S + Rule Arg 1968 1969 - Apr Sun>=1 0:00 0 - + Rule Arg 1974 only - Jan 23 0:00 1:00 S + Rule Arg 1974 only - May 1 0:00 0 - + Rule Arg 1974 1976 - Oct Sun>=1 0:00 1:00 S + Rule Arg 1975 1977 - Apr Sun>=1 0:00 0 - + Rule Arg 1985 only - Nov 2 0:00 1:00 S + Rule Arg 1986 only - Mar 14 0:00 0 - + Rule Arg 1986 1987 - Oct 25 0:00 1:00 S + Rule Arg 1987 only - Feb 13 0:00 0 - + Rule Arg 1988 only - Feb 7 0:00 0 - + Rule Arg 1988 only - Dec 1 0:00 1:00 S + # + # From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): + # These corrections were contributed by InterSoft Argentina S.A., + # obtaining the data from the: + # Talleres de Hidrografia Naval Argentina + # (Argentine Naval Hydrography Institute) + # + # Shanks stops after 1992-03-01; go with Otero. + Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - + Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S + # + # From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): + # From this moment on, the law that mandated the daylight saving + # time corrections was derogated and no more modifications + # to the time zones (for daylight saving) are now made. + # + # From Rives McDow (2000-01-10): + # On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, + # which did not result in the switch of a time zone, as they stayed 9 hours + # from the International Date Line. On March 5, 2000, at 0:00 local time, + # Argentina will come off daylight savings time, which will bring them to 8 + # hours from the International Date Line. + # + # From Peter Gradelski via Steffen Thorsen (2000-03-01): + # We just checked with our San Paulo office and they say the government of + # Argentina decided not to become one of the countries that go on or off DST. + # So Buenos Aires should be -3 hours from GMT at all times. + # + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + # + # Buenos Aires (BA), Distrito Federal (DF), Santa Cruz (SC), + # Tierra del Fuego (TF) & Antartida e Islas + Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov +  -4:16:44 - CMT 1920 May # Cordoba Mean Time +  -4:00 - ART 1930 Dec +  -4:00 Arg AR%sT 1969 Oct 5 +  -3:00 Arg AR%sT + # + # Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), + # Formosa (FM), La Pampa (LP), Chubut (CH) + Zone America/Rosario -4:02:40 - LMT 1894 Nov +  -4:16:44 - CMT 1920 May +  -4:00 - ART 1930 Dec +  -4:00 Arg AR%sT 1969 Oct 5 +  -3:00 Arg AR%sT 1991 Jul +  -3:00 - ART + # + # Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL), + # Neuquen (NQ), Rio Negro (RN) + Zone America/Cordoba -4:16:44 - LMT 1894 Nov +  -4:16:44 - CMT 1920 May +  -4:00 - ART 1930 Dec +  -4:00 Arg AR%sT 1969 Oct 5 +  -3:00 Arg AR%sT 1990 Jul +  -3:00 - ART + # + # Jujuy (JY) + Zone America/Jujuy -4:21:12 - LMT 1894 Nov +  -4:16:44 - CMT 1920 May +  -4:00 - ART 1930 Dec +  -4:00 Arg AR%sT 1969 Oct 5 +  -3:00 Arg AR%sT 1991 Mar 3 +  -4:00 - WART 1991 Oct 6 +  -4:00 1:00 WARST 1992 Mar 15 +  -4:00 - WART 1992 Oct 18 +  -3:00 - ART + # + # Catamarca (CT) + Zone America/Catamarca -4:23:08 - LMT 1894 Nov +  -4:16:44 - CMT 1920 May +  -4:00 - ART 1930 Dec +  -4:00 Arg AR%sT 1969 Oct 5 +  -3:00 Arg AR%sT 1990 Jul +  -3:00 - ART 1991 Jul +  -3:00 Arg AR%sT 1992 Jul +  -3:00 - ART + # + # Mendoza (MZ) + Zone America/Mendoza -4:35:16 - LMT 1894 Nov +  -4:16:44 - CMT 1920 May +  -4:00 - ART 1930 Dec +  -4:00 Arg AR%sT 1969 Oct 5 +  -3:00 Arg AR%sT 1991 Mar 3 +  -4:00 - WART 1991 Oct 15 +  -4:00 1:00 WARST 1992 Mar 1 +  -4:00 - WART 1992 Oct 18 +  -3:00 - ART +  + # Aruba + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad +  -4:30 - ANT 1965 # Netherlands Antilles Time +  -4:00 - AST +  + # Bolivia + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/La_Paz -4:32:36 - LMT 1890 +  -4:32:36 - LPMT 1931 Oct 15 # La Paz Mean Time +  -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST +  -4:00 - BOT # Bolivia Time +  + # Brazil +  + # From Paul Eggert <eggert@twinsun.com> (1993-11-18): + # The mayor of Rio recently attempted to change the time zone rules + # just in his city, in order to leave more summer time for the tourist trade. + # The rule change lasted only part of the day; + # the federal government refused to follow the city's rules, and business + # was in a chaos, so the mayor backed down that afternoon. +  + # From IATA SSIM (1996-02): + # _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), + # Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), + # Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), + # Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. + # [The last three states are new to this issue of the IATA SSIM.] +  + # From Gwillim Law (1996-10-07): + # Geography, history (Tocantins was part of Goias until 1989), and other + # sources of time zone information lead me to believe that AL, SE, and TO were + # always in BR1, and so the only change was whether or not they observed DST.... + # The earliest issue of the SSIM I have is 2/91. Each issue from then until + # 9/95 says that DST is observed only in the ten states I quoted from 9/95, + # along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 + # (UTC-4).... The other two time zones given for Brazil are BR3, which is + # UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is + # UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's + # become part of the state of Pernambuco). The boundary between BR1 and BR2 + # has never been clearly stated. They've simply been called East and West. + # However, some conclusions can be drawn from another IATA manual: the Airline + # Coding Directory, which lists close to 400 airports in Brazil. For each + # airport it gives a time zone which is coded to the SSIM. From that + # information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), + # Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do + # Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. +  + # From Marcos Tadeu (1998-09-27): + # <a href="http://pcdsh01.on.br/verao1.html"> + # Brazilian official page + # </a> + # + # From Paul Eggert (1998-10-29): + # The official decrees referenced below are taken from + # <a href="http://pcdsh01.on.br/DecHV.html"> + # Decretos sobre o Horario de Verao no Brasil + # </a> (1999-10-04, in Portuguese). +  + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + # Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) + # Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) + Rule Brazil 1931 only - Oct 3 11:00 1:00 S + Rule Brazil 1932 1933 - Apr 1 0:00 0 - + Rule Brazil 1932 only - Oct 3 0:00 1:00 S + # Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) + # revoked DST. + # Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) + # Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) + Rule Brazil 1949 1952 - Dec 1 0:00 1:00 S + Rule Brazil 1950 only - Apr 16 1:00 0 - + Rule Brazil 1951 1952 - Apr 1 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) + Rule Brazil 1953 only - Mar 1 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) + # revoked DST. + # Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) + # established DST from 1963-10-23 00:00 to 1964-02-29 00:00 + # in SP, RJ, GB, MG, ES, due to the prolongation of the drought. + # Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) + # extended the above decree to all of the national territory on 12-09. + Rule Brazil 1963 only - Dec 9 0:00 1:00 S + # Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) + # extended summer time by one day to 1964-03-01 00:00 (start of school). + Rule Brazil 1964 only - Mar 1 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) + Rule Brazil 1965 only - Jan 31 0:00 1:00 S + Rule Brazil 1965 only - Mar 31 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) + Rule Brazil 1965 only - Dec 1 0:00 1:00 S + # Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) + Rule Brazil 1966 1968 - Mar 1 0:00 0 - + Rule Brazil 1966 1967 - Nov 1 0:00 1:00 S + # Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) + # revoked DST. + # Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) + Rule Brazil 1985 only - Nov 2 0:00 1:00 S + # Decree 92,310 (1986-01-21) + # Decree 92,463 (1986-03-13) + Rule Brazil 1986 only - Mar 15 0:00 0 - + # Decree 93,316 (1986-10-01) + Rule Brazil 1986 only - Oct 25 0:00 1:00 S + Rule Brazil 1987 only - Feb 14 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) + Rule Brazil 1987 only - Oct 25 0:00 1:00 S + Rule Brazil 1988 only - Feb 7 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) + # except for the states of AC, AM, PA, RR, RO, and AP (then a territory) + Rule Brazil 1988 only - Oct 16 0:00 1:00 S + Rule Brazil 1989 only - Jan 29 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) + # with the same exceptions + Rule Brazil 1989 only - Oct 15 0:00 1:00 S + Rule Brazil 1990 only - Feb 11 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) + # adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. + # Decree 99,629 (1990-10-19) adds BA, MT. + Rule Brazil 1990 only - Oct 21 0:00 1:00 S + Rule Brazil 1991 only - Feb 17 0:00 0 - + # <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) + # adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. + Rule Brazil 1991 only - Oct 20 0:00 1:00 S + Rule Brazil 1992 only - Feb 9 0:00 0 - + # <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) + # adopted by same states. + Rule Brazil 1992 only - Oct 25 0:00 1:00 S + Rule Brazil 1993 only - Jan 31 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) + # adopted by same states, plus AM. + # Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22) + # adopted by same states, minus AM. + # Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) + # adopted by same states, plus TO. + # Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) + # adds AL, SE. + Rule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S + Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - + Rule Brazil 1996 only - Feb 11 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) + # adopted by same states, minus AL, SE. + Rule Brazil 1996 only - Oct 6 0:00 1:00 S + Rule Brazil 1997 only - Feb 16 0:00 0 - + # From Daniel C. Sobral <dcs@gns.com.br> (1998-02-12): + # In 1997, the DS began on October 6. The stated reason was that + # because international television networks ignored Brazil's policy on DS, + # they bought the wrong times on satellite for coverage of Pope's visit. + # This year, the ending date of DS was postponed to March 1 + # to help dealing with the shortages of electric power. + # + # From Paul Eggert (1998-02-25): + # <a href="http://churchnet.ucsm.ac.uk/news/files2/news165.htm"> + # Brazil Prepares for Papal Visit + # </a>, + # Church Net UK (1997-10-02). + # + # Decree 2,317 (1997-09-04), adopted by same states. + Rule Brazil 1997 only - Oct 6 0:00 1:00 S + # Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> + # (1998-02-10) + Rule Brazil 1998 only - Mar 1 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) + # adopted by the same states as before. + Rule Brazil 1998 only - Oct 11 0:00 1:00 S + Rule Brazil 1999 only - Feb 21 0:00 0 - + # Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> + # (1999-08-23) adopted by same states. + # Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) + # adds SE, AL, PE, PR, RN, CE, PI, MA and RR. + # These give only one year's rules. After that, the rules are guesses + # and are quite possibly wrong, but are more likely than no DST at all. + Rule Brazil 1999 max - Oct Sun>=1 0:00 1:00 S + Rule Brazil 2000 max - Feb lastSun 0:00 0 - +  +  + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + # + # Fernando de Noronha + Zone America/Noronha -2:09:40 - LMT 1914 +  -2:00 Brazil FN%sT 1990 Sep 17 +  -2:00 - FNT + # + # Amapa (AP), east Para (PA) + Zone America/Belem -3:13:56 - LMT 1914 +  -3:00 Brazil BR%sT 1988 Sep 12 +  -3:00 - BRT + # + # Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), + # Paraiba (PB), Pernambuco (PE) (except Fernando de Noronha) + Zone America/Fortaleza -2:34:00 - LMT 1914 +  -3:00 Brazil BR%sT 1990 Sep 17 +  -3:00 - BRT 1999 Sep 30 +  -3:00 Brazil BR%sT + # + # Tocantins (TO) + Zone America/Araguaina -3:12:48 - LMT 1914 +  -3:00 Brazil BR%sT 1990 Sep 17 +  -3:00 - BRT 1995 Sep 14 +  -3:00 Brazil BR%sT + # + # Alagoas (AL), Sergipe (SE) + Zone America/Maceio -2:22:52 - LMT 1914 +  -3:00 Brazil BR%sT 1990 Sep 17 +  -3:00 - BRT 1995 Oct 13 +  -3:00 Brazil BR%sT 1996 Sep 4 +  -3:00 - BRT 1999 Sep 30 +  -3:00 Brazil BR%sT + # + # Bahia (BA), Goias (GO), Distrito Federal (DF), Minas Gerais (MG), + # Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), + # Santa Catarina (SC), Rio Grande do Sul (RS) + Zone America/Sao_Paulo -3:06:28 - LMT 1914 +  -3:00 Brazil BR%sT 1963 Oct 23 00:00 +  -3:00 1:00 BRST 1964 +  -3:00 Brazil BR%sT + # + # Mato Grosso, Mato Grosso do Sul + Zone America/Cuiaba -3:44:20 - LMT 1914 +  -4:00 Brazil AM%sT + # + # west Para (PA), Rondonia (RO) + Zone America/Porto_Velho -4:15:36 - LMT 1914 +  -4:00 Brazil AM%sT 1988 Sep 12 +  -4:00 - AMT + # + # Roraima (RR) + Zone America/Boa_Vista -4:02:40 - LMT 1914 +  -4:00 Brazil AM%sT 1988 Sep 12 +  -4:00 - AMT 1999 Sep 30 +  -4:00 Brazil AM%sT + # + # Amazonas (AM) + Zone America/Manaus -4:00:04 - LMT 1914 +  -4:00 Brazil AM%sT 1988 Sep 12 +  -4:00 - AMT 1993 Sep 28 +  -4:00 Brazil AM%sT 1994 Sep 22 +  -4:00 - AMT + # + # Acre (AC) + # Rio_Branco is too ambiguous, since there's a Rio Branco in Uruguay too. + Zone America/Porto_Acre -4:31:12 - LMT 1914 +  -5:00 Brazil AC%sT 1988 Sep 12 +  -5:00 - ACT + # + # Martin Vaz and Trindade are like America/Noronha. +  +  + # Chile +  + # From Eduardo Krell (1995-10-19): + # The law says to switch to DST at midnight [24:00] on the second SATURDAY + # of October.... The law is the same for March and October. + # (1998-09-29): + # Because of the drought this year, the government decided to go into + # DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... + # (unless there's another dry season next year, I guess). +  + # From Julio I. Pacheco Troncoso (1999-03-18): + # Because of the same drought, the government decided to end DST later, + # on April 3, (one-time change). +  + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Chile 1918 only - Sep 1 0:00 1:00 S + Rule Chile 1919 only - Jul 2 0:00 0 - + Rule Chile 1927 1931 - Sep 1 0:00 1:00 S + Rule Chile 1928 1932 - Apr 1 0:00 0 - + Rule Chile 1969 1997 - Oct Sun>=9 0:00 1:00 S + Rule Chile 1970 1998 - Mar Sun>=9 0:00 0 - + Rule Chile 1998 only - Sep 27 0:00 1:00 S + Rule Chile 1999 only - Apr 4 0:00 0 - + Rule Chile 1999 max - Oct Sun>=9 0:00 1:00 S + Rule Chile 2000 max - Mar Sun>=9 0:00 0 - + # IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14; + # (1996-09) says 1998-03-08. Ignore these. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Santiago -4:42:40 - LMT 1890 +  -4:42:40 - SMT 1910 # Santiago Mean Time +  -5:00 Chile CL%sT 1932 Sep # Chile Time +  -4:00 Chile CL%sT + Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri +  -7:17:28 - MMT 1932 Sep # Mataveri Mean Time +  -7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time +  -6:00 Chile EAS%sT + # + # Whitman says Juan Fernandez Is are like America/Santiago. + # San Ambrosio, San Felix + # no information; probably like America/Santiago +  +  + # Colombia + # Shanks specifies 24:00 for 1992 transition times; go with IATA, + # as it seems implausible to change clocks at midnight New Year's Eve. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule CO 1992 only - May 2 0:00 1:00 S + Rule CO 1992 only - Dec 31 0:00 0 - + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 +  -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time +  -5:00 CO CO%sT # Colombia Time + # Malpelo, Providencia, San Andres + # no information; probably like America/Bogota +  + # Curacao + # Shanks says that Bottom and Oranjestad have been at -4:00 since + # standard time was introduced on 1912-03-02; and that Kralendijk and Rincon + # used Kralendijk Mean Time (-4:33:08) from 1912-02-02 to 1965-01-01. + # This all predates our 1970 cutoff, though. + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad +  -4:30 - ANT 1965 # Netherlands Antilles Time +  -4:00 - AST +  + # Ecuador + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Guayaquil -5:19:20 - LMT 1890 +  -5:14:00 - QMT 1931 # Quito Mean Time +  -5:00 - ECT # Ecuador Time + Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno +  -5:00 - ECT 1986 +  -6:00 - GALT # Galapagos Time +  + # Falklands + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 S + Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 - + Rule Falk 1939 only - Oct 1 0:00 1:00 S + Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 S + Rule Falk 1943 only - Jan 1 0:00 0 - + Rule Falk 1983 only - Sep lastSun 0:00 1:00 S + Rule Falk 1984 1985 - Apr lastSun 0:00 0 - + Rule Falk 1984 only - Sep 16 0:00 1:00 S + Rule Falk 1985 1995 - Sep Sun>=9 0:00 1:00 S + Rule Falk 1986 max - Apr Sun>=16 0:00 0 - + Rule Falk 1996 max - Sep Sun>=8 0:00 1:00 S + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone Atlantic/Stanley -3:51:24 - LMT 1890 +  -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time +  -4:00 Falk FK%sT 1983 May # Falkland Is Time +  -3:00 Falk FK%sT 1985 Sep 15 +  -4:00 Falk FK%sT +  + # French Guiana + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Cayenne -3:29:20 - LMT 1911 Jul +  -4:00 - GFT 1967 Oct # French Guiana Time +  -3:00 - GFT +  + # Guyana + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown +  -3:45 - GBGT 1966 May 26 # Br Guiana Time +  -3:45 - GYT 1975 Jul 31 # Guyana Time +  -3:00 - GYT 1991 + # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. +  -4:00 - GYT +  + # Paraguay + # From Paul Eggert (1999-10-29): + # Shanks (1999) says that spring transitions are from 01:00 -> 02:00, + # and autumn transitions are from 00:00 -> 23:00. Go with earlier + # editions of Shanks, and with the IATA, who say transitions occur at 00:00. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Para 1975 1988 - Oct 1 0:00 1:00 S + Rule Para 1975 1978 - Mar 1 0:00 0 - + Rule Para 1979 1991 - Apr 1 0:00 0 - + Rule Para 1989 only - Oct 22 0:00 1:00 S + Rule Para 1990 only - Oct 1 0:00 1:00 S + Rule Para 1991 only - Oct 6 0:00 1:00 S + Rule Para 1992 only - Mar 1 0:00 0 - + Rule Para 1992 only - Oct 5 0:00 1:00 S + Rule Para 1993 only - Mar 31 0:00 0 - + Rule Para 1993 1995 - Oct 1 0:00 1:00 S + Rule Para 1994 1995 - Feb lastSun 0:00 0 - + Rule Para 1996 only - Mar 1 0:00 0 - + # IATA SSIM (1997-09) says Mar 1; go with Shanks. + Rule Para 1997 only - Feb lastSun 0:00 0 - + Rule Para 1998 only - Mar 1 0:00 0 - + Rule Para 1996 1998 - Oct Sun>=1 0:00 1:00 S + # IATA SSIM (1999-02) says lastSat, not lastSun; (1999-09) reports no date; + # go with Shanks. + Rule Para 1999 max - Feb lastSun 0:00 0 - + # IATA SSIM (2000-02) says 1999-10-10. + Rule Para 1999 max - Oct Sun>=8 0:00 1:00 S + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Asuncion -3:50:40 - LMT 1890 +  -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time +  -4:00 - PYT 1972 Oct # Paraguay Time +  -3:00 - PYT 1974 Apr +  -4:00 Para PY%sT +  + # Peru + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Peru 1938 only - Jan 1 0:00 1:00 S + Rule Peru 1938 only - Apr 1 0:00 0 - + Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 S + Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 - + Rule Peru 1987 only - Jan 1 0:00 1:00 S + Rule Peru 1987 only - Apr 1 0:00 0 - + Rule Peru 1990 only - Jan 1 0:00 1:00 S + Rule Peru 1990 only - Apr 1 0:00 0 - + # IATA is ambiguous for 1993/1995; go with Shanks. + Rule Peru 1994 only - Jan 1 0:00 1:00 S + Rule Peru 1994 only - Apr 1 0:00 0 - + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Lima -5:08:12 - LMT 1890 +  -5:09 - LMT 1908 Jul 28 # Lima Mean Time +  -5:00 Peru PE%sT # Peru Time +  + # South Georgia + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken +  -2:00 - GST # South Georgia Time +  + # South Sandwich Is + # uninhabited; scientific personnel have wintered +  + # Suriname + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Paramaribo -3:40:40 - LMT 1911 +  -3:40:52 - PMT 1935 # Paramaribo Mean Time +  -3:40:36 - PMT 1945 Oct # The capital moved? +  -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time +  -3:30 - SRT 1984 Oct # Suriname Time +  -3:00 - SRT +  + # Trinidad and Tobago + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 +  -4:00 - AST +  + # Uruguay + # From Paul Eggert <eggert@twinsun.com> (1993-11-18): + # Uruguay wins the prize for the strangest peacetime manipulation of the rules. + # From Shanks: + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + # Whitman gives 1923 Oct 1; go with Shanks. + Rule Uruguay 1923 only - Oct 2 0:00 0:30 HS + Rule Uruguay 1924 1926 - Apr 1 0:00 0 - + Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS + Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS + # Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman. + Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - + Rule Uruguay 1936 only - Nov 1 0:00 0:30 HS + Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 - + # Whitman gives 1937 Oct 3; go with Shanks. + Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS + # Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, + # and 1943 Apr 13 ``to present time''; go with Shanks. + Rule Uruguay 1941 only - Aug 1 0:00 0 - + Rule Uruguay 1942 only - Jan 1 0:00 0:30 HS + Rule Uruguay 1942 only - Dec 14 0:00 1:00 S + Rule Uruguay 1943 only - Mar 14 0:00 0 - + Rule Uruguay 1959 only - May 24 0:00 1:00 S + Rule Uruguay 1959 only - Nov 15 0:00 0 - + Rule Uruguay 1960 only - Jan 17 0:00 1:00 S + Rule Uruguay 1960 only - Mar 6 0:00 0 - + Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S + Rule Uruguay 1965 only - Sep 26 0:00 0 - + Rule Uruguay 1966 1967 - Oct 31 0:00 0 - + Rule Uruguay 1968 1970 - May 27 0:00 0:30 HS + Rule Uruguay 1968 1970 - Dec 2 0:00 0 - + Rule Uruguay 1972 only - Apr 24 0:00 1:00 S + Rule Uruguay 1972 only - Aug 15 0:00 0 - + Rule Uruguay 1974 only - Mar 10 0:00 0:30 HS + Rule Uruguay 1974 only - Dec 22 0:00 1:00 S + Rule Uruguay 1976 only - Oct 1 0:00 0 - + Rule Uruguay 1977 only - Dec 4 0:00 1:00 S + Rule Uruguay 1978 only - Apr 1 0:00 0 - + Rule Uruguay 1979 only - Oct 1 0:00 1:00 S + Rule Uruguay 1980 only - May 1 0:00 0 - + Rule Uruguay 1987 only - Dec 14 0:00 1:00 S + Rule Uruguay 1988 only - Mar 14 0:00 0 - + Rule Uruguay 1988 only - Dec 11 0:00 1:00 S + Rule Uruguay 1989 only - Mar 12 0:00 0 - + Rule Uruguay 1989 only - Oct 29 0:00 1:00 S + # Shanks says no DST was observed in 1990/1 and 1991/2, + # and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. + Rule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - + Rule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S + Rule Uruguay 1992 only - Oct 18 0:00 1:00 S + Rule Uruguay 1993 only - Feb 28 0:00 0 - + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 +  -3:44:44 - MMT 1920 May 1 # Montevideo MT +  -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time +  -3:00 Uruguay UY%sT +  + # Venezuela + # Zone NAME GMTOFF RULES FORMAT [UNTIL] + Zone America/Caracas -4:27:44 - LMT 1890 +  -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time +  -4:30 - VET 1965 # Venezuela Time +  -4:00 - VET   Newline at end of file added.