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locks; strict; comment @# @; 1.10 date 97.06.18.01.28.24; author jtc; state dead; branches; next 1.9; 1.9 date 97.03.18.03.01.40; author mrg; state Exp; branches; next 1.8; 1.8 date 96.12.18.05.22.55; author jtc; state Exp; branches; next 1.7; 1.7 date 96.09.10.22.54.29; author jtc; state Exp; branches; next 1.6; 1.6 date 96.05.13.21.35.38; author jtc; state Exp; branches; next 1.5; 1.5 date 96.01.08.22.37.09; author jtc; state Exp; branches; next 1.4; 1.4 date 95.07.03.21.10.15; author jtc; state Exp; branches; next 1.3; 1.3 date 95.03.08.20.51.28; author jtc; state Exp; branches; next 1.2; 1.2 date 93.11.03.09.35.23; author cgd; state Exp; branches; next 1.1; 1.1 date 93.03.21.09.45.37; author cgd; state Exp; branches 1.1.1.1; next ; 1.1.1.1 date 93.03.21.09.45.37; author cgd; state Exp; branches; next 1.1.1.2; 1.1.1.2 date 95.03.08.20.41.54; author jtc; state Exp; branches; next 1.1.1.3; 1.1.1.3 date 95.07.03.21.06.04; author jtc; state Exp; branches; next 1.1.1.4; 1.1.1.4 date 96.01.08.22.34.36; author jtc; state Exp; branches; next 1.1.1.5; 1.1.1.5 date 96.05.13.21.28.27; author jtc; state Exp; branches; next 1.1.1.6; 1.1.1.6 date 96.09.10.22.52.03; author jtc; state Exp; branches; next 1.1.1.7; 1.1.1.7 date 96.12.18.05.21.09; author jtc; state Exp; branches; next 1.1.1.8; 1.1.1.8 date 97.03.18.01.37.04; author mrg; state Exp; branches; next ; desc @@ 1.10 log @Remove datfiles subdirectory, it's a remanent from long ago. @ text @# @@(#)southamerica 7.16 # 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 (1996-11-22): # A good source for time zone historical data outside the U.S. is # Thomas G. Shanks, The International Atlas (3rd edition), # San Diego: ACS Publications, Inc. (1991). # # Gwillim Law 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. # # The following abbreviations are used in this file. # Corrections are welcome! # std dst # LMT Local Mean Time # -2:00 FST FDT Fernando de Noronha # -3:00 EST EDT Eastern Brazil # -4:00 WST WDT Western Brazil # -4:00 AST ADT Atlantic # -5:00 AST ADT Acre # # See the `africa' file for time zone naming and abbreviation conventions. # 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 # From Guy Harris: # From Official Airline Guide - Worldwide Edition (1987). Countries not # listed here do not observe DST, according to the OAG. Time zone names # are pure inventions, and none are supplied for countries not observing # DST; updates from natives would be appreciated. The times that DST # starts and ends are based on the assumption that they switch a 2AM just # as everybody else does. ############################################################################### ############################################################################### # 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 (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<=7 0:00 1:00 S Rule Arg 1968 1969 - Apr Sun<=7 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<=7 0:00 1:00 S Rule Arg 1975 1977 - Apr Sun<=7 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 (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 gives 1989 Mar 16 and stops after 1990 Mar 4; 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 (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. # # 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 Guy Harris: # The OAG lists 1987-10-25 and 1988-02-12 as the starting and # ending dates, giving them as "estimated date(s) based on previous year". We # infer a rule here from one example, always a dangerous practice.... Yes, # they really do switch on Saturday, according to the OAG. # "[America/Porto_Acre]" is for the Territory of Acre; # "[America/Noronha]" is for Fernando De Noronha. # From Paul Eggert (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 Paul Eggert (1996-11-22): # Let's make the following assumptions: # # * All data in Shanks are correct through 1990. In particular, # Shanks was right when he said Acre stopped observing DST in mid-1988. # * Areas where Shanks reports DST up to 1990, but the IATA reports no DST # in 1995, stopped observing DST in mid-1990. # # Under these assumptions Brazil needs 7 entries to cover all the distinct # time zone histories since 1970: # # Noronha (UTC-2), Fortaleza (UTC-3), and Manaus (UTC-4) stopped observing DST # in mid-1990. # Maceio (UTC-3) stopped observing DST in mid-1990, but started again mid-1995. # Sao Paulo (UTC-3) and Cuiaba (UTC-4) always observed DST. # Porto Acre (UTC-5) stopped observing DST in mid-1988. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Brazil 1931 only - Oct 3 11:00 1:00 D Rule Brazil 1932 1933 - Apr 1 0:00 0 S Rule Brazil 1932 only - Oct 3 0:00 1:00 D Rule Brazil 1949 1952 - Dec 1 0:00 1:00 D Rule Brazil 1950 only - Apr 16 0:00 0 S Rule Brazil 1951 1953 - Apr 1 0:00 0 S Rule Brazil 1963 only - Dec 9 0:00 1:00 D Rule Brazil 1964 only - Mar 1 0:00 0 S Rule Brazil 1965 only - Jan 31 0:00 1:00 D Rule Brazil 1965 only - Apr 1 0:00 0 S Rule Brazil 1965 only - Dec 1 0:00 1:00 D Rule Brazil 1966 1968 - Mar 1 0:00 0 S Rule Brazil 1966 1967 - Nov 1 0:00 1:00 D Rule Brazil 1985 only - Nov 2 0:00 1:00 D Rule Brazil 1986 only - Mar 15 0:00 0 S Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1:00 D Rule Brazil 1987 only - Feb 14 0:00 0 S Rule Brazil 1988 only - Feb 7 0:00 0 S Rule Brazil 1989 only - Jan 22 0:00 0 S Rule Brazil 1988 1989 - Oct Sun>=10 0:00 1:00 D Rule Brazil 1990 1991 - Feb Sun>=11 0:00 0 S Rule Brazil 1990 1992 - Oct Sun>=20 0:00 1:00 D Rule Brazil 1992 only - Feb 9 0:00 0 S Rule Brazil 1993 max - Oct Sun>=11 0:00 1:00 D Rule Brazil 1993 only - Jan 31 0:00 0 S Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 S Rule Brazil 1996 max - Feb Sun>=11 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] # # Fernando de Noronha Zone America/Noronha -2:09:40 - LMT 1914 -2:00 - FST 1963 Dec 9 -2:00 Brazil F%sT 1990 Jul -2:00 - FST # # Amapa, east Para, Maranhao, Piaui, Ceara, Rio Grande do Norte, Paraiba, # Pernambuco (except Fernando de Noronha) Zone America/Fortaleza -2:34:00 - LMT 1914 -3:00 - EST 1963 Dec 9 -3:00 Brazil E%sT 1990 Jul -3:00 - EST # # Alagoas, Sergipe, Tocantins Zone America/Maceio -2:22:52 - LMT 1914 -3:00 - EST 1963 Dec 9 -3:00 Brazil E%sT 1990 Jul -3:00 - EST 1995 Jul -3:00 Brazil E%sT # # Bahia, Goias, Distrito Federal, Minas Gerais, Espirito Santo, Rio de Janeiro, # Sao Paulo, Parana, Santa Catarina, Rio Grande do Sul Zone America/Sao_Paulo -3:06:28 - LMT 1914 -3:00 Brazil E%sT # # Mato Grosso, Mato Grosso do Sul Zone America/Cuiaba -3:44:20 - LMT 1914 -4:00 - WST 1963 Dec 9 -4:00 Brazil W%sT # # Roraima, west Para, Amazonas, Rondonia Zone America/Manaus -4:00:04 - LMT 1914 -4:00 - WST 1963 Dec 9 -4:00 Brazil W%sT 1990 Jul -4:00 - WST # # Acre # 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 - AST 1963 Dec 9 -5:00 Brazil A%sT 1988 Jul -5:00 - AST # # Martin Vaz and Trinidade 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. # 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 max - Oct Sun>=9 0:00 1:00 S Rule Chile 1970 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 for now. # 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 # 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 # 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 Bob Devine (1988-01-28): # Paraguay: First day in October to last in March. Midnight switch?? # Since 1980. # From U. S. Naval Observatory (1989-01-19): # PARAGUAY 4 H BEHIND UTC # PARAGUAY 3 H BEHIND UTC OCT 1, '88-MAR 31, '89 # From Shanks (1991): # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Para 1975 1978 - Oct 1 0:00 1:00 S Rule Para 1975 1978 - Mar 1 0:00 0 - # Shanks says 1979 was all DST. Rule Para 1980 1991 - Apr 1 0:00 0 - Rule Para 1980 1988 - Oct 1 0:00 1:00 S 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 max - Oct 1 0:00 1:00 S Rule Para 1994 1995 - Feb lastSun 0:00 0 - Rule Para 1996 max - Mar 1 0:00 0 - # 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 - Rule Peru 1993 only - Jan 1 0:00 1:00 S Rule Peru 1993 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 # 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 (1993-11-18): # Uruguay wins the prize for the strangest peacetime manipulation of the rules. # From Shanks (1991): # 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 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 1993 - Oct Sun>=15 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 @ 1.9 log @merge tzdata1997d @ text @@ 1.8 log @sync with tzdata96m @ text @d1 1 a1 1 # @@(#)southamerica 7.15 d64 1 a64 1 # I am sending modifications to the Argentinian time zone table... d102 1 a102 1 # (Argentinian Naval Hydrography Institute) @ 1.7 log @sync with tzdata96k @ text @d1 1 a1 1 # @@(#)southamerica 7.13 d7 1 a7 1 # From Paul Eggert (1996-09-03): d11 9 a19 1 # Except where otherwise noted, it is the source for the data below. d56 1 a56 1 # From Bob Devine (January 28, 1988): d60 1 a60 1 # From U. S. Naval Observatory (January 19, 19889): d63 1 a63 1 # From Hernan G. Otero (June 26, 1995): d98 1 a98 1 # From Hernan G. Otero (June 26, 1995): d108 1 a108 1 # From Hernan G. Otero (June 26, 1995): d114 3 d122 50 d189 1 a189 1 # The OAG lists October 25, 1987 and February 12, 1988 as the starting and d196 1 a196 24 # From Bob Devine (January 28, 1988): # The only information I found is that there was no DST up to 1985. # But there was some before 1952! # From U. S. Naval Observatory (January 16, 1989): # BRAZIL WEST 5 H BEHIND UTC TERRITORY OF ACRE # BRAZIL WEST 4 H BEHIND UTC ACRE OCT 23, '88-FEB 11, # BRAZIL '89 (ESTIMATED) # BRAZIL CENTRAL 4 H BEHIND UTC MANAUS # BRAZIL CENTRAL 3 H BEHIND UTC MANAUS OCT 23, '88-FEB 11, # BRAZIL CENTRAL '89 (ESTIMATED) # BRAZIL EAST 3 H BEHIND UTC COASTAL STATES, RIO, SAO # BRAZIL EAST PAULO, BRASILIA # BRAZIL EAST 2 H BEHIND UTC COASTAL STATES, RIO, SAO # BRAZIL PAULO, BRASILIA OCT 23, # BRAZIL '88-FEB 11, '89 # BRAZIL (ESTIMATED) # BRAZIL 2 H BEHIND UTC ATLANTIC ISLANDS, FERNANDO # BRAZIL DE NORONHA # BRAZIL 1 H BEHIND UTC OCT 23, '88-FEB 11, '89 # BRAZIL (ESTIMATED) # BRAZIL 3 H BEHIND UTC FOR MOST MAJOR AIRPORTS. # From Paul Eggert (November 18, 1993): d202 43 a244 3 # Shanks claims Acre stopped observing DST after 1988 Feb 7, but it # could just be that his table ran out of room. We're extrapolating # about time zone changes after 1990 Feb 11. d266 9 a274 2 Rule Brazil 1988 max - Oct Sun>=15 0:00 1:00 D Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S d276 2 d280 19 a298 1 -2:00 Brazil F%sT d301 7 d310 4 a313 1 -4:00 Brazil W%sT d317 2 a318 1 -5:00 Brazil A%sT d336 2 d354 3 d360 1 a360 1 -5:00 - COT # Colombia Time d389 1 a389 1 Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 S d391 1 d410 3 a412 2 -3:00 - GYT d416 1 a416 1 # From Bob Devine (January 28, 1988): d420 1 a420 1 # From U. S. Naval Observatory (January 19, 1989): d429 1 a429 1 Rule Para 1980 max - Apr 1 0:00 0 - d432 8 a439 1 Rule Para 1990 max - Oct 1 0:00 1:00 S d457 2 d487 1 a487 1 # From Paul Eggert (November 18, 1993): d531 4 a534 1 Rule Uruguay 1990 only - Mar 4 0:00 0 - @ 1.6 log @sync with tzdata96h @ text @d1 1 a1 1 # @@(#)southamerica 7.12 d7 1 a7 1 # From Paul Eggert (November 18, 1993): d13 1 a13 3 # I invented the abbreviations marked `*' in the following table; # the rest are from earlier versions of this file, or from other sources. # Some of these are just plausible excuses for common English abbreviations. d18 1 a18 4 # -3:00 EST EDT Eastern South America (conflicts with -5:00) # -3:00 ARST ARDT Argentina # -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic # -4:00 CST CDT Chile (conflicts with -6:00) d20 2 a21 4 # -5:00 AST ADT Acre (conflicts with -4:00) # -5:00 EST EDT Eastern, Ecuador* # -6:00 CST CDT Archipelago of Columbus*, Central # -7:00 MST MDT Mataveri*, Mountain d23 10 a32 1 # See the `africa' file for Zone naming conventions. d60 29 a88 29 Rule Arg 1930 only - Dec 1 0:00 1:00 D Rule Arg 1931 only - Apr 1 0:00 0 S Rule Arg 1931 only - Oct 15 0:00 1:00 D Rule Arg 1932 1940 - Mar 1 0:00 0 S Rule Arg 1932 1939 - Nov 1 0:00 1:00 D Rule Arg 1940 only - Jul 1 0:00 1:00 D Rule Arg 1941 only - Jun 15 0:00 0 S Rule Arg 1941 only - Oct 15 0:00 1:00 D Rule Arg 1943 only - Aug 1 0:00 0 S Rule Arg 1943 only - Oct 15 0:00 1:00 D Rule Arg 1946 only - Mar 1 0:00 0 S Rule Arg 1946 only - Oct 1 0:00 1:00 D Rule Arg 1963 only - Oct 1 0:00 0 S Rule Arg 1963 only - Dec 15 0:00 1:00 D Rule Arg 1964 1966 - Mar 1 0:00 0 S Rule Arg 1964 1966 - Oct 15 0:00 1:00 D Rule Arg 1967 only - Apr 1 0:00 0 S Rule Arg 1967 1968 - Oct Sun<=7 0:00 1:00 D Rule Arg 1968 1969 - Apr Sun<=7 0:00 0 S Rule Arg 1974 only - Jan 23 0:00 1:00 D Rule Arg 1974 only - May 1 0:00 0 S Rule Arg 1974 1976 - Oct Sun<=7 0:00 1:00 D Rule Arg 1975 1977 - Apr Sun<=7 0:00 0 S Rule Arg 1985 only - Nov 2 0:00 1:00 D Rule Arg 1986 only - Mar 14 0:00 0 S Rule Arg 1986 1987 - Oct 25 0:00 1:00 D Rule Arg 1987 only - Feb 13 0:00 0 S Rule Arg 1988 only - Feb 7 0:00 0 S Rule Arg 1988 only - Dec 1 0:00 1:00 D d97 2 a98 2 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 S Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 D d107 3 a109 3 -4:17 - CMT 1920 May # Cordoba Mean Time -4:00 - AST 1930 Dec -4:00 Arg A%sT 1969 Oct 5 d115 1 a115 1 -4:30 - NAST 1965 # Netherlands Antilles d121 3 a123 3 -4:33 - LPMT 1931 Oct 15 # La Paz Mean Time -4:33 1:00 LPDT 1932 Mar 21 -4:00 - AST d169 1 a169 1 Rule Brazil 1931 only - Oct 3 11:00 1 D d171 2 a172 2 Rule Brazil 1932 only - Oct 3 0:00 1 D Rule Brazil 1949 1952 - Dec 1 0:00 1 D d175 1 a175 1 Rule Brazil 1963 only - Dec 9 0:00 1 D d177 1 a177 1 Rule Brazil 1965 only - Jan 31 0:00 1 D d179 1 a179 1 Rule Brazil 1965 only - Dec 1 0:00 1 D d181 2 a182 2 Rule Brazil 1966 1967 - Nov 1 0:00 1 D Rule Brazil 1985 only - Nov 2 0:00 1 D d184 1 a184 1 Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1 D d188 1 a188 1 Rule Brazil 1988 max - Oct Sun>=15 0:00 1 D d214 6 a219 6 Rule Chile 1918 only - Sep 1 0:00 1:00 D Rule Chile 1919 only - Jul 2 0:00 0 S Rule Chile 1927 1931 - Sep 1 0:00 1:00 D Rule Chile 1928 1932 - Apr 1 0:00 0 S Rule Chile 1969 max - Oct Sun>=9 0:00 1:00 D Rule Chile 1970 max - Mar Sun>=9 0:00 0 S d222 3 a224 3 -4:43 - SMT 1910 # Santiago Mean Time -5:00 Chile C%sT 1932 Sep -4:00 Chile C%sT d226 3 a228 3 -7:17 - MMT 1932 Sep # Mataveri Mean Time -7:00 Chile M%sT 1982 Mar 14 -6:00 Chile C%sT d238 2 a239 2 -4:56 - BMT 1914 Nov 23 # Bogota Mean Time -5:00 - EST d246 1 a246 1 -4:30 - NAST 1965 # Netherlands Antilles d252 2 a253 2 -5:14 - QMT 1931 # Quito Mean Time -5:00 - EST d255 2 a256 2 -5:00 - EST 1986 -6:00 - CST d260 10 a269 10 Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 D Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 S Rule Falk 1939 only - Oct 1 0:00 1:00 D Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 D Rule Falk 1943 only - Jan 1 0:00 0 S Rule Falk 1983 only - Sep lastSun 0:00 1:00 D Rule Falk 1984 1985 - Apr lastSun 0:00 0 S Rule Falk 1984 only - Sep 16 0:00 1:00 D Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 D Rule Falk 1986 max - Apr Sun>=16 0:00 0 S d272 4 a275 4 -3:51 - SMT 1912 Mar 12 # Stanley Mean Time -4:00 Falk A%sT 1983 May -3:00 Falk E%sT 1985 Sep 15 -4:00 Falk A%sT d280 2 a281 2 -4:00 - AST 1967 Oct -3:00 - EST d286 3 a288 2 -3:45 - BGST 1975 Jul 31 # British Guiana ST -3:00 - EST d303 2 a304 2 Rule Para 1975 1978 - Oct 1 0:00 1:00 D Rule Para 1975 1978 - Mar 1 0:00 0 S d306 4 a309 4 Rule Para 1980 max - Apr 1 0:00 0 S Rule Para 1980 1988 - Oct 1 0:00 1:00 D Rule Para 1989 only - Oct 22 0:00 1:00 D Rule Para 1990 max - Oct 1 0:00 1:00 D d312 4 a315 4 -3:51 - AMT 1931 Oct 10 # Asuncion Mean Time -4:00 - AST 1972 Oct -3:00 - EST 1974 Apr -4:00 Para A%sT d319 8 a326 8 Rule Peru 1938 only - Jan 1 0:00 1:00 D Rule Peru 1938 only - Apr 1 0:00 0 S Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 D Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 S Rule Peru 1987 only - Jan 1 0:00 1:00 D Rule Peru 1987 only - Apr 1 0:00 0 S Rule Peru 1990 only - Jan 1 0:00 1:00 D Rule Peru 1990 only - Apr 1 0:00 0 S d329 2 a330 2 -5:09 - LMT 1908 Jul 28 -5:00 Peru E%sT d335 1 a335 1 -2:00 - FST d345 3 a347 2 -3:30 - DGST 1984 Oct # Dutch Guiana Std Time -3:00 - EST d360 4 a363 4 Rule Uruguay 1923 only - Oct 2 0:00 0:30 HD Rule Uruguay 1924 1926 - Apr 1 0:00 0 S Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HD Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HD d365 3 a367 3 Rule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 S Rule Uruguay 1936 only - Nov 1 0:00 0:30 HD Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 S d369 1 a369 1 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HD d372 28 a399 28 Rule Uruguay 1941 only - Aug 1 0:00 0 S Rule Uruguay 1942 only - Jan 1 0:00 0:30 HD Rule Uruguay 1942 only - Dec 14 0:00 1:00 D Rule Uruguay 1943 only - Mar 14 0:00 0 S Rule Uruguay 1959 only - May 24 0:00 1:00 D Rule Uruguay 1959 only - Nov 15 0:00 0 S Rule Uruguay 1960 only - Jan 17 0:00 1:00 D Rule Uruguay 1960 only - Mar 6 0:00 0 S Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 D Rule Uruguay 1965 only - Sep 26 0:00 0 S Rule Uruguay 1966 1967 - Oct 31 0:00 0 S Rule Uruguay 1968 1970 - May 27 0:00 0:30 HD Rule Uruguay 1968 1970 - Dec 2 0:00 0 S Rule Uruguay 1972 only - Apr 24 0:00 1:00 D Rule Uruguay 1972 only - Aug 15 0:00 0 S Rule Uruguay 1974 only - Mar 10 0:00 0:30 HD Rule Uruguay 1974 only - Dec 22 0:00 1:00 D Rule Uruguay 1976 only - Oct 1 0:00 0 S Rule Uruguay 1977 only - Dec 4 0:00 1:00 D Rule Uruguay 1978 only - Apr 1 0:00 0 S Rule Uruguay 1979 only - Oct 1 0:00 1:00 D Rule Uruguay 1980 only - May 1 0:00 0 S Rule Uruguay 1987 only - Dec 14 0:00 1:00 D Rule Uruguay 1988 only - Mar 14 0:00 0 S Rule Uruguay 1988 only - Dec 11 0:00 1:00 D Rule Uruguay 1989 only - Mar 12 0:00 0 S Rule Uruguay 1989 only - Oct 29 0:00 1:00 D Rule Uruguay 1990 only - Mar 4 0:00 0 S d402 3 a404 3 -3:45 - MMT 1920 May 1 # Montevideo MT -3:30 Uruguay U%sT 1942 Dec 14 # Uruguay ST -3:00 Uruguay E%sT d409 3 a411 3 -4:28 - CMT 1912 Feb 12 # Caracas Mean Time -4:30 - VZT 1965 # Venezuela Time -4:00 - AST @ 1.5 log @sync with tzdata96a @ text @d1 1 a1 1 # @@(#)southamerica 7.11 a166 1 Rule Brazil 1914 only - Jan 1 0:00 0 S a257 1 Rule Falk 1912 only - Mar 12 0:00 0 S a299 1 Rule Para 1974 only - Apr 1 0:00 0 S a315 1 Rule Peru 1908 only - Jul 28 0:00 0 S a354 1 Rule Uruguay 1920 only - May 1 0:00 0 S @ 1.4 log @merged with tzdata95d @ text @d1 1 a1 1 # @@(#)southamerica 7.8 d110 6 d130 2 a131 2 # "Brazil/Acre" is for the Territory of Acre; "Brazil/DeNoronha" is for # Fernando De Noronha. d208 3 a210 7 # From Guy Harris: # The OAG lists October 11, 1987 and March 12, 1988 as the starting and # ending dates, giving them as "estimated date(s) based on previous year." # From Bob Devine (January 28, 1988): # Chile has had 2nd Sunday in October to 2nd Sunday in March DST since 1977. # Switch is at midnight. OAG is right. d217 2 a218 2 Rule Chile 1969 max - Oct Sun>=8 0:00 1:00 D Rule Chile 1970 max - Mar Sun>=8 0:00 0 S d339 1 a339 1 # no information a356 1 # Your guess is as good as mine for what happened after 1989. @ 1.3 log @sync with tzdata95b @ text @d1 1 a1 1 # @@(#)southamerica 7.6 d17 12 a28 11 # std dst # LMT Local Mean Time # -2:00 FST FDT Fernando de Noronha # -3:00 EST EDT Eastern South America (conflicts with -5:00) # -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic # -4:00 CST CDT Chile (conflicts with -6:00) # -4:00 WST WDT Western Brazil # -5:00 AST ADT Acre (conflicts with -4:00) # -5:00 EST EDT Eastern, Ecuador* # -6:00 CST CDT Archipelago of Columbus*, Central # -7:00 MST MDT Mataveri*, Mountain d53 4 d87 16 a102 7 Rule Arg 1989 only - Mar 16 0:00 0 S Rule Arg 1989 only - Oct 15 0:00 1:00 D Rule Arg 1990 only - Mar 4 0:00 0 S # _The Economist_ (8 Jan 1994, p 42) reports that Argentina # had DST in 1991-2 and 1992-3, but not in 1990-1 or in 1993-4. # It has something to do with electricity companies meeting demand in summer. # We don't know the 1991-3 transition times, unfortunately. d108 1 a108 1 -3:00 Arg E%sT @ 1.2 log @updates to timezone files from Arthur David Olson more updates are in the works; i'm doing this in chunks. @ text @d1 29 a29 1 # @@(#)southamerica 7.1 d41 62 d136 10 d147 37 a183 2 Rule Brazil 1987 max - Feb Sat<=14 2:00 0 S Rule Brazil 1987 max - Oct Sat<=28 2:00 1:00 D a184 7 # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] Zone Brazil/East -3:00 Brazil E%sT Zone Brazil/West -4:00 Brazil W%sT Zone Brazil/Acre -5:00 Brazil A%sT Zone Brazil/DeNoronha -2:00 Brazil F%sT ############################################################################### d197 43 a239 2 Rule Chile 1977 max - Oct Sun>=8 0:00 1:00 D Rule Chile 1978 max - Mar Sun>=8 0:00 0 S d241 31 a271 3 # Zone NAME GMTOFF RULES/SAVE FORMAT [UNTIL] Zone Chile/Continental -4:00 Chile C%sT Zone Chile/EasterIsland -6:00 Chile E%sT a272 1 ############################################################################### d284 16 a299 2 # From Arthur David Olson (January 21, 1989): # Still don't know time of day when switch occurs. Punt. d301 97 a397 13 ############################################################################### # Argentina # From Bob Devine (January 28, 1988): # 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 (January 19, 19889): # ARGENTINA 3 H BEHIND UTC # From Arthur David Olson (January 21, 1989): # OAG, USNO and Bob have different data. Punt. @ 1.1 log @Initial revision @ text @d1 1 a1 1 # @@(#)southamerica 4.3 @ 1.1.1.1 log @initial import of 386bsd-0.1 sources @ text @@ 1.1.1.2 log @updated timezone files from ado @ text @d1 1 a1 29 # @@(#)southamerica 7.6 # 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 (November 18, 1993): # A good source for time zone historical data outside the U.S. is # Thomas G. Shanks, The International Atlas (3rd edition), # San Diego: ACS Publications, Inc. (1991). # Except where otherwise noted, it is the source for the data below. # # I invented the abbreviations marked `*' in the following table; # the rest are from earlier versions of this file, or from other sources. # Some of these are just plausible excuses for common English abbreviations. # Corrections are welcome! # std dst # LMT Local Mean Time # -2:00 FST FDT Fernando de Noronha # -3:00 EST EDT Eastern South America (conflicts with -5:00) # -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic # -4:00 CST CDT Chile (conflicts with -6:00) # -4:00 WST WDT Western Brazil # -5:00 AST ADT Acre (conflicts with -4:00) # -5:00 EST EDT Eastern, Ecuador* # -6:00 CST CDT Archipelago of Columbus*, Central # -7:00 MST MDT Mataveri*, Mountain # # See the `africa' file for Zone naming conventions. a12 62 ############################################################################### # Argentina # From Bob Devine (January 28, 1988): # 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 (January 19, 19889): # ARGENTINA 3 H BEHIND UTC # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Arg 1930 only - Dec 1 0:00 1:00 D Rule Arg 1931 only - Apr 1 0:00 0 S Rule Arg 1931 only - Oct 15 0:00 1:00 D Rule Arg 1932 1940 - Mar 1 0:00 0 S Rule Arg 1932 1939 - Nov 1 0:00 1:00 D Rule Arg 1940 only - Jul 1 0:00 1:00 D Rule Arg 1941 only - Jun 15 0:00 0 S Rule Arg 1941 only - Oct 15 0:00 1:00 D Rule Arg 1943 only - Aug 1 0:00 0 S Rule Arg 1943 only - Oct 15 0:00 1:00 D Rule Arg 1946 only - Mar 1 0:00 0 S Rule Arg 1946 only - Oct 1 0:00 1:00 D Rule Arg 1963 only - Oct 1 0:00 0 S Rule Arg 1963 only - Dec 15 0:00 1:00 D Rule Arg 1964 1966 - Mar 1 0:00 0 S Rule Arg 1964 1966 - Oct 15 0:00 1:00 D Rule Arg 1967 only - Apr 1 0:00 0 S Rule Arg 1967 1968 - Oct Sun<=7 0:00 1:00 D Rule Arg 1968 1969 - Apr Sun<=7 0:00 0 S Rule Arg 1974 only - Jan 23 0:00 1:00 D Rule Arg 1974 only - May 1 0:00 0 S Rule Arg 1974 1976 - Oct Sun<=7 0:00 1:00 D Rule Arg 1975 1977 - Apr Sun<=7 0:00 0 S Rule Arg 1985 only - Nov 2 0:00 1:00 D Rule Arg 1986 only - Mar 14 0:00 0 S Rule Arg 1986 1987 - Oct 25 0:00 1:00 D Rule Arg 1987 only - Feb 13 0:00 0 S Rule Arg 1988 only - Feb 7 0:00 0 S Rule Arg 1988 only - Dec 1 0:00 1:00 D Rule Arg 1989 only - Mar 16 0:00 0 S Rule Arg 1989 only - Oct 15 0:00 1:00 D Rule Arg 1990 only - Mar 4 0:00 0 S # _The Economist_ (8 Jan 1994, p 42) reports that Argentina # had DST in 1991-2 and 1992-3, but not in 1990-1 or in 1993-4. # It has something to do with electricity companies meeting demand in summer. # We don't know the 1991-3 transition times, unfortunately. # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Buenos_Aires -3:53:48 - LMT 1894 Nov -4:17 - CMT 1920 May # Cordoba Mean Time -4:00 - AST 1930 Dec -4:00 Arg A%sT 1969 Oct 5 -3:00 Arg E%sT # Bolivia # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/La_Paz -4:32:36 - LMT 1890 -4:33 - LPMT 1931 Oct 15 # La Paz Mean Time -4:33 1:00 LPDT 1932 Mar 21 -4:00 - AST d46 3 a48 9 # From Paul Eggert (November 18, 1993): # 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. # Shanks claims Acre stopped observing DST after 1988 Feb 7, but it # could just be that his table ran out of room. We're extrapolating # about time zone changes after 1990 Feb 11. d50 5 a54 38 # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Brazil 1914 only - Jan 1 0:00 0 S Rule Brazil 1931 only - Oct 3 11:00 1 D Rule Brazil 1932 1933 - Apr 1 0:00 0 S Rule Brazil 1932 only - Oct 3 0:00 1 D Rule Brazil 1949 1952 - Dec 1 0:00 1 D Rule Brazil 1950 only - Apr 16 0:00 0 S Rule Brazil 1951 1953 - Apr 1 0:00 0 S Rule Brazil 1963 only - Dec 9 0:00 1 D Rule Brazil 1964 only - Mar 1 0:00 0 S Rule Brazil 1965 only - Jan 31 0:00 1 D Rule Brazil 1965 only - Apr 1 0:00 0 S Rule Brazil 1965 only - Dec 1 0:00 1 D Rule Brazil 1966 1968 - Mar 1 0:00 0 S Rule Brazil 1966 1967 - Nov 1 0:00 1 D Rule Brazil 1985 only - Nov 2 0:00 1 D Rule Brazil 1986 only - Mar 15 0:00 0 S Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1 D Rule Brazil 1987 only - Feb 14 0:00 0 S Rule Brazil 1988 only - Feb 7 0:00 0 S Rule Brazil 1989 only - Jan 22 0:00 0 S Rule Brazil 1988 max - Oct Sun>=15 0:00 1 D Rule Brazil 1990 max - Feb Sun>=8 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Noronha -2:09:40 - LMT 1914 -2:00 - FST 1963 Dec 9 -2:00 Brazil F%sT Zone America/Sao_Paulo -3:06:28 - LMT 1914 -3:00 Brazil E%sT Zone America/Manaus -4:00:04 - LMT 1914 -4:00 - WST 1963 Dec 9 -4:00 Brazil W%sT # 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 - AST 1963 Dec 9 -5:00 Brazil A%sT # # Martin Vaz and Trinidade are like America/Noronha. d56 1 d69 2 a70 43 Rule Chile 1918 only - Sep 1 0:00 1:00 D Rule Chile 1919 only - Jul 2 0:00 0 S Rule Chile 1927 1931 - Sep 1 0:00 1:00 D Rule Chile 1928 1932 - Apr 1 0:00 0 S Rule Chile 1969 max - Oct Sun>=8 0:00 1:00 D Rule Chile 1970 max - Mar Sun>=8 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Santiago -4:42:40 - LMT 1890 -4:43 - SMT 1910 # Santiago Mean Time -5:00 Chile C%sT 1932 Sep -4:00 Chile C%sT Zone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri -7:17 - MMT 1932 Sep # Mataveri Mean Time -7:00 Chile M%sT 1982 Mar 14 -6:00 Chile C%sT # # Whitman says Juan Fernandez Is are like America/Santiago. # San Ambrosio, San Felix # no information; probably like America/Santiago # Colombia # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Bogota -4:56:20 - LMT 1884 Mar 13 -4:56 - BMT 1914 Nov 23 # Bogota Mean Time -5:00 - EST # Malpelo, Providencia, San Andres # no information; probably like America/Bogota # Curacao # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad -4:30 - NAST 1965 # Netherlands Antilles -4:00 - AST # Ecuador # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Guayaquil -5:19:20 - LMT 1890 -5:14 - QMT 1931 # Quito Mean Time -5:00 - EST Zone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno -5:00 - EST 1986 -6:00 - CST d72 3 a74 31 # Falklands # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Falk 1912 only - Mar 12 0:00 0 S Rule Falk 1937 1938 - Sep lastSun 0:00 1:00 D Rule Falk 1938 1942 - Mar Sun>=19 0:00 0 S Rule Falk 1939 only - Oct 1 0:00 1:00 D Rule Falk 1940 1942 - Sep lastSun 0:00 1:00 D Rule Falk 1943 only - Jan 1 0:00 0 S Rule Falk 1983 only - Sep lastSun 0:00 1:00 D Rule Falk 1984 1985 - Apr lastSun 0:00 0 S Rule Falk 1984 only - Sep 16 0:00 1:00 D Rule Falk 1985 max - Sep Sun>=9 0:00 1:00 D Rule Falk 1986 max - Apr Sun>=16 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/Stanley -3:51:24 - LMT 1890 -3:51 - SMT 1912 Mar 12 # Stanley Mean Time -4:00 Falk A%sT 1983 May -3:00 Falk E%sT 1985 Sep 15 -4:00 Falk A%sT # French Guiana # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Cayenne -3:29:20 - LMT 1911 Jul -4:00 - AST 1967 Oct -3:00 - EST # Guyana # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown -3:45 - BGST 1975 Jul 31 # British Guiana ST -3:00 - EST d76 1 d88 13 a100 16 # From Shanks (1991): # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Para 1974 only - Apr 1 0:00 0 S Rule Para 1975 1978 - Oct 1 0:00 1:00 D Rule Para 1975 1978 - Mar 1 0:00 0 S # Shanks says 1979 was all DST. Rule Para 1980 max - Apr 1 0:00 0 S Rule Para 1980 1988 - Oct 1 0:00 1:00 D Rule Para 1989 only - Oct 22 0:00 1:00 D Rule Para 1990 max - Oct 1 0:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Asuncion -3:50:40 - LMT 1890 -3:51 - AMT 1931 Oct 10 # Asuncion Mean Time -4:00 - AST 1972 Oct -3:00 - EST 1974 Apr -4:00 Para A%sT d102 2 a103 97 # Peru # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Peru 1908 only - Jul 28 0:00 0 S Rule Peru 1938 only - Jan 1 0:00 1:00 D Rule Peru 1938 only - Apr 1 0:00 0 S Rule Peru 1938 1939 - Sep lastSun 0:00 1:00 D Rule Peru 1939 1940 - Mar Sun>=24 0:00 0 S Rule Peru 1987 only - Jan 1 0:00 1:00 D Rule Peru 1987 only - Apr 1 0:00 0 S Rule Peru 1990 only - Jan 1 0:00 1:00 D Rule Peru 1990 only - Apr 1 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Lima -5:08:12 - LMT 1890 -5:09 - LMT 1908 Jul 28 -5:00 Peru E%sT # South Georgia # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken -2:00 - FST # South Sandwich Is # no information # 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 - DGST 1984 Oct # Dutch Guiana Std Time -3:00 - EST # 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 (November 18, 1993): # Uruguay wins the prize for the strangest peacetime manipulation of the rules. # Your guess is as good as mine for what happened after 1989. # From Shanks (1991): # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Uruguay 1920 only - May 1 0:00 0 S # Whitman gives 1923 Oct 1; go with Shanks. Rule Uruguay 1923 only - Oct 2 0:00 0:30 HD Rule Uruguay 1924 1926 - Apr 1 0:00 0 S Rule Uruguay 1924 1925 - Oct 1 0:00 0:30 HD Rule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HD # 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 S Rule Uruguay 1936 only - Nov 1 0:00 0:30 HD Rule Uruguay 1937 1941 - Mar lastSun 0:00 0 S # Whitman gives 1937 Oct 3; go with Shanks. Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HD # 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 S Rule Uruguay 1942 only - Jan 1 0:00 0:30 HD Rule Uruguay 1942 only - Dec 14 0:00 1:00 D Rule Uruguay 1943 only - Mar 14 0:00 0 S Rule Uruguay 1959 only - May 24 0:00 1:00 D Rule Uruguay 1959 only - Nov 15 0:00 0 S Rule Uruguay 1960 only - Jan 17 0:00 1:00 D Rule Uruguay 1960 only - Mar 6 0:00 0 S Rule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 D Rule Uruguay 1965 only - Sep 26 0:00 0 S Rule Uruguay 1966 1967 - Oct 31 0:00 0 S Rule Uruguay 1968 1970 - May 27 0:00 0:30 HD Rule Uruguay 1968 1970 - Dec 2 0:00 0 S Rule Uruguay 1972 only - Apr 24 0:00 1:00 D Rule Uruguay 1972 only - Aug 15 0:00 0 S Rule Uruguay 1974 only - Mar 10 0:00 0:30 HD Rule Uruguay 1974 only - Dec 22 0:00 1:00 D Rule Uruguay 1976 only - Oct 1 0:00 0 S Rule Uruguay 1977 only - Dec 4 0:00 1:00 D Rule Uruguay 1978 only - Apr 1 0:00 0 S Rule Uruguay 1979 only - Oct 1 0:00 1:00 D Rule Uruguay 1980 only - May 1 0:00 0 S Rule Uruguay 1987 only - Dec 14 0:00 1:00 D Rule Uruguay 1988 only - Mar 14 0:00 0 S Rule Uruguay 1988 only - Dec 11 0:00 1:00 D Rule Uruguay 1989 only - Mar 12 0:00 0 S Rule Uruguay 1989 only - Oct 29 0:00 1:00 D Rule Uruguay 1990 only - Mar 4 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Montevideo -3:44:44 - LMT 1898 Jun 28 -3:45 - MMT 1920 May 1 # Montevideo MT -3:30 Uruguay U%sT 1942 Dec 14 # Uruguay ST -3:00 Uruguay E%sT # Venezuela # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Caracas -4:27:44 - LMT 1890 -4:28 - CMT 1912 Feb 12 # Caracas Mean Time -4:30 - VZT 1965 # Venezuela Time -4:00 - AST @ 1.1.1.3 log @updated to tzdata95d @ text @d1 1 a1 1 # @@(#)southamerica 7.8 d17 11 a27 12 # std dst # LMT Local Mean Time # -2:00 FST FDT Fernando de Noronha # -3:00 EST EDT Eastern South America (conflicts with -5:00) # -3:00 ARST ARDT Argentina # -4:00 AST ADT Andes*, Antilles*, Asuncion*, Atlantic # -4:00 CST CDT Chile (conflicts with -6:00) # -4:00 WST WDT Western Brazil # -5:00 AST ADT Acre (conflicts with -4:00) # -5:00 EST EDT Eastern, Ecuador* # -6:00 CST CDT Archipelago of Columbus*, Central # -7:00 MST MDT Mataveri*, Mountain a51 4 # From Hernan G. Otero (June 26, 1995): # I am sending modifications to the Argentinian time zone table... # AR was chosen because they are the ISO letters that represent Argentina. d82 7 a88 16 # # From Hernan G. Otero (June 26, 1995): # These corrections were contributed by InterSoft Argentina S.A., # obtaining the data from the: # Talleres de Hidrografia Naval Argentina # (Argentinian Naval Hydrography Institute) # # Shanks gives 1989 Mar 16 and stops after 1990 Mar 4; go with Otero. Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 S Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 D # # From Hernan G. Otero (June 26, 1995): # 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. # d94 1 a94 1 -3:00 Arg AR%sT @ 1.1.1.4 log @import tzdata96a @ text @d1 1 a1 1 # @@(#)southamerica 7.11 a109 6 # Aruba # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad -4:30 - NAST 1965 # Netherlands Antilles -4:00 - AST d124 2 a125 2 # "[America/Porto_Acre]" is for the Territory of Acre; # "[America/Noronha]" is for Fernando De Noronha. d202 7 a208 3 # 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. d215 2 a216 2 Rule Chile 1969 max - Oct Sun>=9 0:00 1:00 D Rule Chile 1970 max - Mar Sun>=9 0:00 0 S d337 1 a337 1 # uninhabited d355 1 @ 1.1.1.5 log @import tzdata96h @ text @d1 1 a1 1 # @@(#)southamerica 7.12 d167 1 d259 1 d302 1 d319 1 d359 1 @ 1.1.1.6 log @import tzdata96k @ text @d1 1 a1 1 # @@(#)southamerica 7.13 d7 1 a7 1 # From Paul Eggert (1996-09-03): d13 3 a15 1 # The following abbreviations are used in this file. d20 4 a23 1 # -3:00 EST EDT Eastern Brazil d25 4 a28 2 # -4:00 AST ADT Atlantic # -5:00 AST ADT Acre d30 1 a30 10 # See the `africa' file for time zone naming and abbreviation conventions. # 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 d58 29 a86 29 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<=7 0:00 1:00 S Rule Arg 1968 1969 - Apr Sun<=7 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<=7 0:00 1:00 S Rule Arg 1975 1977 - Apr Sun<=7 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 d95 2 a96 2 Rule Arg 1989 1993 - Mar Sun>=1 0:00 0 - Rule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S d105 3 a107 3 -4:16:44 - CMT 1920 May # Cordoba Mean Time -4:00 - ART 1930 Dec -4:00 Arg AR%sT 1969 Oct 5 d113 1 a113 1 -4:30 - ANT 1965 # Netherlands Antilles Time d119 3 a121 3 -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 d167 1 a167 1 Rule Brazil 1931 only - Oct 3 11:00 1:00 D d169 2 a170 2 Rule Brazil 1932 only - Oct 3 0:00 1:00 D Rule Brazil 1949 1952 - Dec 1 0:00 1:00 D d173 1 a173 1 Rule Brazil 1963 only - Dec 9 0:00 1:00 D d175 1 a175 1 Rule Brazil 1965 only - Jan 31 0:00 1:00 D d177 1 a177 1 Rule Brazil 1965 only - Dec 1 0:00 1:00 D d179 2 a180 2 Rule Brazil 1966 1967 - Nov 1 0:00 1:00 D Rule Brazil 1985 only - Nov 2 0:00 1:00 D d182 1 a182 1 Rule Brazil 1986 1987 - Oct Sat<=28 0:00 1:00 D d186 1 a186 1 Rule Brazil 1988 max - Oct Sun>=15 0:00 1:00 D d212 6 a217 6 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 max - Oct Sun>=9 0:00 1:00 S Rule Chile 1970 max - Mar Sun>=9 0:00 0 - d220 3 a222 3 -4:42:40 - SMT 1910 # Santiago Mean Time -5:00 Chile CL%sT 1932 Sep # Chile Time -4:00 Chile CL%sT d224 3 a226 3 -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 d236 2 a237 2 -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time -5:00 - COT # Colombia Time d244 1 a244 1 -4:30 - ANT 1965 # Netherlands Antilles Time d250 2 a251 2 -5:14:00 - QMT 1931 # Quito Mean Time -5:00 - ECT # Ecuador Time d253 2 a254 2 -5:00 - ECT 1986 -6:00 - GALT # Galapagos Time d258 10 a267 10 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 max - Sep Sun>=9 0:00 1:00 S Rule Falk 1986 max - Apr Sun>=16 0:00 0 - d270 4 a273 4 -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 d278 2 a279 2 -4:00 - GFT 1967 Oct # French Guiana Time -3:00 - GFT d284 2 a285 3 -3:45 - GBGT 1966 May 26 # Br Guiana Time -3:45 - GYT 1975 Jul 31 # Guyana Time -3:00 - GYT d300 2 a301 2 Rule Para 1975 1978 - Oct 1 0:00 1:00 S Rule Para 1975 1978 - Mar 1 0:00 0 - d303 4 a306 4 Rule Para 1980 max - Apr 1 0:00 0 - Rule Para 1980 1988 - Oct 1 0:00 1:00 S Rule Para 1989 only - Oct 22 0:00 1:00 S Rule Para 1990 max - Oct 1 0:00 1:00 S d309 4 a312 4 -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 d316 8 a323 8 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 - d326 2 a327 2 -5:09 - LMT 1908 Jul 28 # Lima Mean Time -5:00 Peru PE%sT # Peru Time d332 1 a332 1 -2:00 - GST # South Georgia Time d342 2 a343 3 -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time -3:30 - SRT 1984 Oct # Suriname Time -3:00 - SRT d356 4 a359 4 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 d361 3 a363 3 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 - d365 1 a365 1 Rule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS d368 28 a395 28 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 Rule Uruguay 1990 only - Mar 4 0:00 0 - d398 3 a400 3 -3:44:44 - MMT 1920 May 1 # Montevideo MT -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time -3:00 Uruguay UY%sT d405 3 a407 3 -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time -4:30 - VET 1965 # Venezuela Time -4:00 - VET @ 1.1.1.7 log @import tzdata96m @ text @d1 1 a1 1 # @@(#)southamerica 7.15 d7 1 a7 1 # From Paul Eggert (1996-11-22): d11 1 a11 9 # # Gwillim Law 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. d48 1 a48 1 # From Bob Devine (1988-01-28): d52 1 a52 1 # From U. S. Naval Observatory (1988-01-199): d55 1 a55 1 # From Hernan G. Otero (1995-06-26): d90 1 a90 1 # From Hernan G. Otero (1995-06-26): d100 1 a100 1 # From Hernan G. Otero (1995-06-26): a105 3 # # Buenos Aires (BA), Distrito Federal (DF), Santa Cruz (SC), # Tierra del Fuego (TF) & Antartida e Islas a110 50 # # 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 d128 1 a128 1 # The OAG lists 1987-10-25 and 1988-02-12 as the starting and d135 24 a158 1 # From Paul Eggert (1993-11-18): d164 3 a166 43 # 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 Paul Eggert (1996-11-22): # Let's make the following assumptions: # # * All data in Shanks are correct through 1990. In particular, # Shanks was right when he said Acre stopped observing DST in mid-1988. # * Areas where Shanks reports DST up to 1990, but the IATA reports no DST # in 1995, stopped observing DST in mid-1990. # # Under these assumptions Brazil needs 7 entries to cover all the distinct # time zone histories since 1970: # # Noronha (UTC-2), Fortaleza (UTC-3), and Manaus (UTC-4) stopped observing DST # in mid-1990. # Maceio (UTC-3) stopped observing DST in mid-1990, but started again mid-1995. # Sao Paulo (UTC-3) and Cuiaba (UTC-4) always observed DST. # Porto Acre (UTC-5) stopped observing DST in mid-1988. d188 2 a189 9 Rule Brazil 1988 1989 - Oct Sun>=10 0:00 1:00 D Rule Brazil 1990 1991 - Feb Sun>=11 0:00 0 S Rule Brazil 1990 1992 - Oct Sun>=20 0:00 1:00 D Rule Brazil 1992 only - Feb 9 0:00 0 S Rule Brazil 1993 max - Oct Sun>=11 0:00 1:00 D Rule Brazil 1993 only - Jan 31 0:00 0 S Rule Brazil 1994 1995 - Feb Sun>=15 0:00 0 S Rule Brazil 1996 max - Feb Sun>=11 0:00 0 S a190 2 # # Fernando de Noronha d193 1 a193 19 -2:00 Brazil F%sT 1990 Jul -2:00 - FST # # Amapa, east Para, Maranhao, Piaui, Ceara, Rio Grande do Norte, Paraiba, # Pernambuco (except Fernando de Noronha) Zone America/Fortaleza -2:34:00 - LMT 1914 -3:00 - EST 1963 Dec 9 -3:00 Brazil E%sT 1990 Jul -3:00 - EST # # Alagoas, Sergipe, Tocantins Zone America/Maceio -2:22:52 - LMT 1914 -3:00 - EST 1963 Dec 9 -3:00 Brazil E%sT 1990 Jul -3:00 - EST 1995 Jul -3:00 Brazil E%sT # # Bahia, Goias, Distrito Federal, Minas Gerais, Espirito Santo, Rio de Janeiro, # Sao Paulo, Parana, Santa Catarina, Rio Grande do Sul d196 1 a196 3 # # Mato Grosso, Mato Grosso do Sul Zone America/Cuiaba -3:44:20 - LMT 1914 a198 8 # # Roraima, west Para, Amazonas, Rondonia Zone America/Manaus -4:00:04 - LMT 1914 -4:00 - WST 1963 Dec 9 -4:00 Brazil W%sT 1990 Jul -4:00 - WST # # Acre d202 1 a202 2 -5:00 Brazil A%sT 1988 Jul -5:00 - AST a219 2 # IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14; # (1996-09) says 1998-03-08. Ignore these for now. a235 3 # 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 - d239 1 a239 1 -5:00 CO CO%sT # Colombia Time d268 1 a268 1 Rule Falk 1985 1995 - Sep Sun>=9 0:00 1:00 S a269 1 Rule Falk 1996 max - Sep Sun>=8 0:00 1:00 S d288 2 a289 3 -3:00 - GYT 1991 # IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. -4:00 - GYT d293 1 a293 1 # From Bob Devine (1988-01-28): d297 1 a297 1 # From U. S. Naval Observatory (1989-01-19): d306 1 a306 1 Rule Para 1980 1991 - Apr 1 0:00 0 - d309 1 a309 8 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 max - Oct 1 0:00 1:00 S Rule Para 1994 1995 - Feb lastSun 0:00 0 - Rule Para 1996 max - Mar 1 0:00 0 - a326 2 Rule Peru 1993 only - Jan 1 0:00 1:00 S Rule Peru 1993 only - Apr 1 0:00 0 - d355 1 a355 1 # From Paul Eggert (1993-11-18): d399 1 a399 4 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 1993 - Oct Sun>=15 0:00 1:00 S Rule Uruguay 1993 only - Feb 28 0:00 0 - @ 1.1.1.8 log @import tzdata97d @ text @d1 1 a1 1 # @@(#)southamerica 7.16 d64 1 a64 1 # I am sending modifications to the Argentine time zone table... d102 1 a102 1 # (Argentine Naval Hydrography Institute) @