southamerica revision 75267
175267Swollman# @(#)southamerica 7.40 264499Swollman 358787Sru# $FreeBSD: head/share/zoneinfo/southamerica 75267 2001-04-06 16:46:52Z wollman $ 42742Swollman 52742Swollman# This data is by no means authoritative; if you think you know better, 62742Swollman# go ahead and edit the file (and please send any changes to 72742Swollman# tz@elsie.nci.nih.gov for general use in the future). 82742Swollman 958787Sru# From Paul Eggert <eggert@twinsun.com> (1999-07-07): 102742Swollman# A good source for time zone historical data outside the U.S. is 1158787Sru# Thomas G. Shanks, The International Atlas (5th edition), 1258787Sru# San Diego: ACS Publications, Inc. (1999). 132742Swollman# 1458787Sru# Gwillim Law <Gwil_Law@bridge-point.com> writes that a good source 1520094Swollman# for recent time zone data is the International Air Transport 1620094Swollman# Association's Standard Schedules Information Manual (IATA SSIM), 1720094Swollman# published semiannually. Law sent in several helpful summaries 1820094Swollman# of the IATA's data after 1990. 1920094Swollman# 2020094Swollman# Except where otherwise noted, Shanks is the source for entries through 1990, 2120094Swollman# and IATA SSIM is the source for entries after 1990. 2220094Swollman# 2319878Swollman# Earlier editions of these tables used the North American style (e.g. ARST and 2419878Swollman# ARDT for Argentine Standard and Daylight Time), but the following quote 2519878Swollman# suggests that it's better to use European style (e.g. ART and ARST). 2619878Swollman# I suggest the use of _Summer time_ instead of the more cumbersome 2719878Swollman# _daylight-saving time_. _Summer time_ seems to be in general use 2819878Swollman# in Europe and South America. 2919878Swollman# -- E O Cutler, _New York Times_ (1937-02-14), quoted in 3019878Swollman# H L Mencken, _The American Language: Supplement I_ (1960), p 466 3158787Sru# 3258787Sru# Earlier editions of these tables also used the North American style 3358787Sru# for time zones in Brazil, but this was incorrect, as Brazilians say 3458787Sru# "summer time". Reinaldo Goulart, a Sao Paulo businessman active in 3558787Sru# the railroad sector, writes (1999-07-06): 3658787Sru# The subject of time zones is currently a matter of discussion/debate in 3758787Sru# Brazil. Let's say that "the Brasilia time" is considered the 3858787Sru# "official time" because Brasilia is the capital city. 3958787Sru# The other three time zones are called "Brasilia time "minus one" or 4058787Sru# "plus one" or "plus two". As far as I know there is no such 4158787Sru# name/designation as "Eastern Time" or "Central Time". 4258787Sru# So I invented the following (English-language) abbreviations for now. 4358787Sru# Corrections are welcome! 4458787Sru# std dst 4558787Sru# -2:00 FNT FNST Fernando de Noronha 4658787Sru# -3:00 BRT BRST Brasilia 4758787Sru# -4:00 AMT AMST Amazon 4858787Sru# -5:00 ACT ACST Acre 492742Swollman 502742Swollman############################################################################### 512742Swollman 522742Swollman############################################################################### 532742Swollman 542742Swollman# Argentina 552742Swollman 5619878Swollman# From Bob Devine (1988-01-28): 572742Swollman# Argentina: first Sunday in October to first Sunday in April since 1976. 582742Swollman# Double Summer time from 1969 to 1974. Switches at midnight. 592742Swollman 6019878Swollman# From U. S. Naval Observatory (1988-01-199): 612742Swollman# ARGENTINA 3 H BEHIND UTC 622742Swollman 6319878Swollman# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 6421217Swollman# I am sending modifications to the Argentine time zone table... 659908Swollman# AR was chosen because they are the ISO letters that represent Argentina. 669908Swollman 672742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 6819878SwollmanRule Arg 1930 only - Dec 1 0:00 1:00 S 6919878SwollmanRule Arg 1931 only - Apr 1 0:00 0 - 7019878SwollmanRule Arg 1931 only - Oct 15 0:00 1:00 S 7119878SwollmanRule Arg 1932 1940 - Mar 1 0:00 0 - 7219878SwollmanRule Arg 1932 1939 - Nov 1 0:00 1:00 S 7319878SwollmanRule Arg 1940 only - Jul 1 0:00 1:00 S 7419878SwollmanRule Arg 1941 only - Jun 15 0:00 0 - 7519878SwollmanRule Arg 1941 only - Oct 15 0:00 1:00 S 7619878SwollmanRule Arg 1943 only - Aug 1 0:00 0 - 7719878SwollmanRule Arg 1943 only - Oct 15 0:00 1:00 S 7819878SwollmanRule Arg 1946 only - Mar 1 0:00 0 - 7919878SwollmanRule Arg 1946 only - Oct 1 0:00 1:00 S 8019878SwollmanRule Arg 1963 only - Oct 1 0:00 0 - 8119878SwollmanRule Arg 1963 only - Dec 15 0:00 1:00 S 8219878SwollmanRule Arg 1964 1966 - Mar 1 0:00 0 - 8319878SwollmanRule Arg 1964 1966 - Oct 15 0:00 1:00 S 8419878SwollmanRule Arg 1967 only - Apr 1 0:00 0 - 8558787SruRule Arg 1967 1968 - Oct Sun>=1 0:00 1:00 S 8658787SruRule Arg 1968 1969 - Apr Sun>=1 0:00 0 - 8719878SwollmanRule Arg 1974 only - Jan 23 0:00 1:00 S 8819878SwollmanRule Arg 1974 only - May 1 0:00 0 - 8958787SruRule Arg 1974 1976 - Oct Sun>=1 0:00 1:00 S 9058787SruRule Arg 1975 1977 - Apr Sun>=1 0:00 0 - 9119878SwollmanRule Arg 1985 only - Nov 2 0:00 1:00 S 9219878SwollmanRule Arg 1986 only - Mar 14 0:00 0 - 9319878SwollmanRule Arg 1986 1987 - Oct 25 0:00 1:00 S 9419878SwollmanRule Arg 1987 only - Feb 13 0:00 0 - 9519878SwollmanRule Arg 1988 only - Feb 7 0:00 0 - 9619878SwollmanRule Arg 1988 only - Dec 1 0:00 1:00 S 979908Swollman# 9819878Swollman# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 999908Swollman# These corrections were contributed by InterSoft Argentina S.A., 1009908Swollman# obtaining the data from the: 1019908Swollman# Talleres de Hidrografia Naval Argentina 10221217Swollman# (Argentine Naval Hydrography Institute) 1039908Swollman# 10458787Sru# Shanks stops after 1992-03-01; go with Otero. 10519878SwollmanRule Arg 1989 1993 - Mar Sun>=1 0:00 0 - 10619878SwollmanRule Arg 1989 1992 - Oct Sun>=15 0:00 1:00 S 1079908Swollman# 10819878Swollman# From Hernan G. Otero <hernan@isoft.com.ar> (1995-06-26): 1099908Swollman# From this moment on, the law that mandated the daylight saving 1109908Swollman# time corrections was derogated and no more modifications 1119908Swollman# to the time zones (for daylight saving) are now made. 1129908Swollman# 11358787Sru# From Rives McDow (2000-01-10): 11458787Sru# On October 3, 1999, 0:00 local, Argentina implemented daylight savings time, 11558787Sru# which did not result in the switch of a time zone, as they stayed 9 hours 11664499Swollman# from the International Date Line. 11764499SwollmanRule Arg 1999 only - Oct Sun>=1 0:00 1:00 S 11864499SwollmanRule Arg 2000 only - Mar Sun>=1 0:00 0 - 11958787Sru# 12058787Sru# From Peter Gradelski via Steffen Thorsen (2000-03-01): 12167578Swollman# We just checked with our Sao Paulo office and they say the government of 12258787Sru# Argentina decided not to become one of the countries that go on or off DST. 12358787Sru# So Buenos Aires should be -3 hours from GMT at all times. 12458787Sru# 12564499Swollman# From Fabian L. Arce Jofre <farcejofre@bigfoot.com> (2000-04-04): 12664499Swollman# The law that claimed DST for Argentina was derogated by President Fernando 12764499Swollman# de la Rua on March 2, 2000, because it would make people spend more energy 12864499Swollman# in the winter time, rather than less. The change took effect on March 3. 12964499Swollman# 1302742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 13120094Swollman# 13264499Swollman# Buenos Aires (BA), Capital Federal (CF), Santa Cruz (SC), 13364499Swollman# Tierra del Fuego, Antartida e Islas del Atlantico Sur (TF) 1342742SwollmanZone America/Buenos_Aires -3:53:48 - LMT 1894 Nov 13519878Swollman -4:16:44 - CMT 1920 May # Cordoba Mean Time 13619878Swollman -4:00 - ART 1930 Dec 13758787Sru -4:00 Arg AR%sT 1969 Oct 5 13864499Swollman -3:00 Arg AR%sT 1999 Oct 3 0:00 13964499Swollman -4:00 Arg AR%sT 2000 Mar 3 0:00 14064499Swollman -3:00 - ART 14120094Swollman# 14220094Swollman# Santa Fe (SF), Entre Rios (ER), Corrientes (CN), Misiones (MN), Chaco (CC), 14320094Swollman# Formosa (FM), La Pampa (LP), Chubut (CH) 14420094SwollmanZone America/Rosario -4:02:40 - LMT 1894 Nov 14520094Swollman -4:16:44 - CMT 1920 May 14620094Swollman -4:00 - ART 1930 Dec 14758787Sru -4:00 Arg AR%sT 1969 Oct 5 14820094Swollman -3:00 Arg AR%sT 1991 Jul 14964499Swollman -3:00 - ART 1999 Oct 3 0:00 15064499Swollman -4:00 Arg AR%sT 2000 Mar 3 0:00 15120094Swollman -3:00 - ART 15220094Swollman# 15320094Swollman# Cordoba (CB), Santiago del Estero (SE), Salta (SA), Tucuman (TM), La Rioja (LR), San Juan (SJ), San Luis (SL), 15420094Swollman# Neuquen (NQ), Rio Negro (RN) 15520094SwollmanZone America/Cordoba -4:16:44 - LMT 1894 Nov 15620094Swollman -4:16:44 - CMT 1920 May 15720094Swollman -4:00 - ART 1930 Dec 15858787Sru -4:00 Arg AR%sT 1969 Oct 5 15920094Swollman -3:00 Arg AR%sT 1990 Jul 16064499Swollman -3:00 - ART 1999 Oct 3 0:00 16164499Swollman -4:00 Arg AR%sT 2000 Mar 3 0:00 16220094Swollman -3:00 - ART 16320094Swollman# 16420094Swollman# Jujuy (JY) 16520094SwollmanZone America/Jujuy -4:21:12 - LMT 1894 Nov 16620094Swollman -4:16:44 - CMT 1920 May 16720094Swollman -4:00 - ART 1930 Dec 16820094Swollman -4:00 Arg AR%sT 1969 Oct 5 16920094Swollman -3:00 Arg AR%sT 1991 Mar 3 17020094Swollman -4:00 - WART 1991 Oct 6 17120094Swollman -4:00 1:00 WARST 1992 Mar 15 17220094Swollman -4:00 - WART 1992 Oct 18 17364499Swollman -3:00 - ART 1999 Oct 3 0:00 17464499Swollman -4:00 Arg AR%sT 2000 Mar 3 0:00 17520094Swollman -3:00 - ART 17620094Swollman# 17720094Swollman# Catamarca (CT) 17820094SwollmanZone America/Catamarca -4:23:08 - LMT 1894 Nov 17920094Swollman -4:16:44 - CMT 1920 May 18020094Swollman -4:00 - ART 1930 Dec 18158787Sru -4:00 Arg AR%sT 1969 Oct 5 18220094Swollman -3:00 Arg AR%sT 1990 Jul 18320094Swollman -3:00 - ART 1991 Jul 18420094Swollman -3:00 Arg AR%sT 1992 Jul 18564499Swollman -3:00 - ART 1999 Oct 3 0:00 18664499Swollman -4:00 Arg AR%sT 2000 Mar 3 0:00 18720094Swollman -3:00 - ART 18820094Swollman# 18920094Swollman# Mendoza (MZ) 19020094SwollmanZone America/Mendoza -4:35:16 - LMT 1894 Nov 19120094Swollman -4:16:44 - CMT 1920 May 19220094Swollman -4:00 - ART 1930 Dec 19320094Swollman -4:00 Arg AR%sT 1969 Oct 5 19420094Swollman -3:00 Arg AR%sT 1991 Mar 3 19520094Swollman -4:00 - WART 1991 Oct 15 19620094Swollman -4:00 1:00 WARST 1992 Mar 1 19720094Swollman -4:00 - WART 1992 Oct 18 19864499Swollman -3:00 - ART 1999 Oct 3 0:00 19964499Swollman -4:00 Arg AR%sT 2000 Mar 3 0:00 20020094Swollman -3:00 - ART 2018029Swollman 20214343Swollman# Aruba 20314343Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 20414343SwollmanZone America/Aruba -4:40:24 - LMT 1912 Feb 12 # Oranjestad 20519878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 20614343Swollman -4:00 - AST 20714343Swollman 2082742Swollman# Bolivia 2092742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 2102742SwollmanZone America/La_Paz -4:32:36 - LMT 1890 21119878Swollman -4:32:36 - LPMT 1931 Oct 15 # La Paz Mean Time 21219878Swollman -4:32:36 1:00 BOST 1932 Mar 21 # Bolivia ST 21319878Swollman -4:00 - BOT # Bolivia Time 2142742Swollman 2152742Swollman# Brazil 2162742Swollman 21719878Swollman# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 2182742Swollman# The mayor of Rio recently attempted to change the time zone rules 2192742Swollman# just in his city, in order to leave more summer time for the tourist trade. 2202742Swollman# The rule change lasted only part of the day; 2212742Swollman# the federal government refused to follow the city's rules, and business 2222742Swollman# was in a chaos, so the mayor backed down that afternoon. 2232742Swollman 22420094Swollman# From IATA SSIM (1996-02): 22520094Swollman# _Only_ the following states in BR1 observe DST: Rio Grande do Sul (RS), 22620094Swollman# Santa Catarina (SC), Parana (PR), Sao Paulo (SP), Rio de Janeiro (RJ), 22720094Swollman# Espirito Santo (ES), Minas Gerais (MG), Bahia (BA), Goias (GO), 22820094Swollman# Distrito Federal (DF), Tocantins (TO), Sergipe [SE] and Alagoas [AL]. 22920094Swollman# [The last three states are new to this issue of the IATA SSIM.] 23020094Swollman 23120094Swollman# From Gwillim Law (1996-10-07): 23220094Swollman# Geography, history (Tocantins was part of Goias until 1989), and other 23320094Swollman# sources of time zone information lead me to believe that AL, SE, and TO were 23420094Swollman# always in BR1, and so the only change was whether or not they observed DST.... 23520094Swollman# The earliest issue of the SSIM I have is 2/91. Each issue from then until 23620094Swollman# 9/95 says that DST is observed only in the ten states I quoted from 9/95, 23720094Swollman# along with Mato Grosso (MT) and Mato Grosso do Sul (MS), which are in BR2 23820094Swollman# (UTC-4).... The other two time zones given for Brazil are BR3, which is 23920094Swollman# UTC-5, no DST, and applies only in the state of Acre (AC); and BR4, which is 24020094Swollman# UTC-2, and applies to Fernando de Noronha (formerly FN, but I believe it's 24120094Swollman# become part of the state of Pernambuco). The boundary between BR1 and BR2 24220094Swollman# has never been clearly stated. They've simply been called East and West. 24320094Swollman# However, some conclusions can be drawn from another IATA manual: the Airline 24420094Swollman# Coding Directory, which lists close to 400 airports in Brazil. For each 24520094Swollman# airport it gives a time zone which is coded to the SSIM. From that 24620094Swollman# information, I'm led to conclude that the states of Amapa (AP), Ceara (CE), 24720094Swollman# Maranhao (MA), Paraiba (PR), Pernambuco (PE), Piaui (PI), and Rio Grande do 24820094Swollman# Norte (RN), and the eastern part of Para (PA) are all in BR1 without DST. 24920094Swollman 25043014Swollman# From Marcos Tadeu (1998-09-27): 25143014Swollman# <a href="http://pcdsh01.on.br/verao1.html"> 25243014Swollman# Brazilian official page 25343014Swollman# </a> 25475267Swollman 25575267Swollman# From Jesper Norgaard (2000-11-03): 25675267Swollman# [For an official list of which regions in Brazil use which time zones, see:] 25775267Swollman# http://pcdsh01.on.br/Fusbr.htm 25875267Swollman# http://pcdsh01.on.br/Fusbrhv.htm 25975267Swollman 26067578Swollman# From Paul Eggert (2000-10-02): 26143014Swollman# The official decrees referenced below are taken from 26243014Swollman# <a href="http://pcdsh01.on.br/DecHV.html"> 26343014Swollman# Decretos sobre o Horario de Verao no Brasil 26458787Sru# </a> (1999-10-04, in Portuguese). 26567578Swollman# The official site for all decrees, including those not related to time, is 26667578Swollman# <a href="http://www.presidencia.gov.br/CCIVIL/decreto/principal_ano.htm"> 26767578Swollman# Presidencia da Republica, Subchefia para Assuntos Juridicos, Decretos 26867578Swollman# </a> (in Portuguese). 26943014Swollman 2702742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 27143543Swollman# Decree <a href="http://pcdsh01.on.br/HV20466.htm">20,466</a> (1931-10-01) 27243543Swollman# Decree <a href="http://pcdsh01.on.br/HV21896.htm">21,896</a> (1932-01-10) 27358787SruRule Brazil 1931 only - Oct 3 11:00 1:00 S 27458787SruRule Brazil 1932 1933 - Apr 1 0:00 0 - 27558787SruRule Brazil 1932 only - Oct 3 0:00 1:00 S 27643543Swollman# Decree <a href="http://pcdsh01.on.br/HV23195.htm">23,195</a> (1933-10-10) 27743014Swollman# revoked DST. 27843543Swollman# Decree <a href="http://pcdsh01.on.br/HV27496.htm">27,496</a> (1949-11-24) 27943543Swollman# Decree <a href="http://pcdsh01.on.br/HV27998.htm">27,998</a> (1950-04-13) 28058787SruRule Brazil 1949 1952 - Dec 1 0:00 1:00 S 28158787SruRule Brazil 1950 only - Apr 16 1:00 0 - 28258787SruRule Brazil 1951 1952 - Apr 1 0:00 0 - 28343543Swollman# Decree <a href="http://pcdsh01.on.br/HV32308.htm">32,308</a> (1953-02-24) 28458787SruRule Brazil 1953 only - Mar 1 0:00 0 - 28543543Swollman# Decree <a href="http://pcdsh01.on.br/HV34724.htm">34,724</a> (1953-11-30) 28643014Swollman# revoked DST. 28743543Swollman# Decree <a href="http://pcdsh01.on.br/HV52700.htm">52,700</a> (1963-10-18) 28843543Swollman# established DST from 1963-10-23 00:00 to 1964-02-29 00:00 28943543Swollman# in SP, RJ, GB, MG, ES, due to the prolongation of the drought. 29043543Swollman# Decree <a href="http://pcdsh01.on.br/HV53071.htm">53,071</a> (1963-12-03) 29143543Swollman# extended the above decree to all of the national territory on 12-09. 29258787SruRule Brazil 1963 only - Dec 9 0:00 1:00 S 29343543Swollman# Decree <a href="http://pcdsh01.on.br/HV53604.htm">53,604</a> (1964-02-25) 29443543Swollman# extended summer time by one day to 1964-03-01 00:00 (start of school). 29558787SruRule Brazil 1964 only - Mar 1 0:00 0 - 29643543Swollman# Decree <a href="http://pcdsh01.on.br/HV55639.htm">55,639</a> (1965-01-27) 29758787SruRule Brazil 1965 only - Jan 31 0:00 1:00 S 29858787SruRule Brazil 1965 only - Mar 31 0:00 0 - 29943543Swollman# Decree <a href="http://pcdsh01.on.br/HV57303.htm">57,303</a> (1965-11-22) 30058787SruRule Brazil 1965 only - Dec 1 0:00 1:00 S 30143543Swollman# Decree <a href="http://pcdsh01.on.br/HV57843.htm">57,843</a> (1966-02-18) 30258787SruRule Brazil 1966 1968 - Mar 1 0:00 0 - 30358787SruRule Brazil 1966 1967 - Nov 1 0:00 1:00 S 30443543Swollman# Decree <a href="http://pcdsh01.on.br/HV63429.htm">63,429</a> (1968-10-15) 30543543Swollman# revoked DST. 30643543Swollman# Decree <a href="http://pcdsh01.on.br/HV91698.htm">91,698</a> (1985-09-27) 30758787SruRule Brazil 1985 only - Nov 2 0:00 1:00 S 30843543Swollman# Decree 92,310 (1986-01-21) 30943543Swollman# Decree 92,463 (1986-03-13) 31058787SruRule Brazil 1986 only - Mar 15 0:00 0 - 31143543Swollman# Decree 93,316 (1986-10-01) 31258787SruRule Brazil 1986 only - Oct 25 0:00 1:00 S 31358787SruRule Brazil 1987 only - Feb 14 0:00 0 - 31443543Swollman# Decree <a href="http://pcdsh01.on.br/HV94922.htm">94,922</a> (1987-09-22) 31558787SruRule Brazil 1987 only - Oct 25 0:00 1:00 S 31658787SruRule Brazil 1988 only - Feb 7 0:00 0 - 31743543Swollman# Decree <a href="http://pcdsh01.on.br/HV96676.htm">96,676</a> (1988-09-12) 31843543Swollman# except for the states of AC, AM, PA, RR, RO, and AP (then a territory) 31958787SruRule Brazil 1988 only - Oct 16 0:00 1:00 S 32058787SruRule Brazil 1989 only - Jan 29 0:00 0 - 32143543Swollman# Decree <a href="http://pcdsh01.on.br/HV98077.htm">98,077</a> (1989-08-21) 32243543Swollman# with the same exceptions 32358787SruRule Brazil 1989 only - Oct 15 0:00 1:00 S 32458787SruRule Brazil 1990 only - Feb 11 0:00 0 - 32543543Swollman# Decree <a href="http://pcdsh01.on.br/HV99530.htm">99,530</a> (1990-09-17) 32643543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, GO, MS, DF. 32743543Swollman# Decree 99,629 (1990-10-19) adds BA, MT. 32858787SruRule Brazil 1990 only - Oct 21 0:00 1:00 S 32958787SruRule Brazil 1991 only - Feb 17 0:00 0 - 33043543Swollman# <a href="http://pcdsh01.on.br/HV1991.htm">Unnumbered decree</a> (1991-09-25) 33143543Swollman# adopted by RS, SC, PR, SP, RJ, ES, MG, BA, GO, MT, MS, DF. 33258787SruRule Brazil 1991 only - Oct 20 0:00 1:00 S 33358787SruRule Brazil 1992 only - Feb 9 0:00 0 - 33443543Swollman# <a href="http://pcdsh01.on.br/HV1992.htm">Unnumbered decree</a> (1992-10-16) 33543543Swollman# adopted by same states. 33658787SruRule Brazil 1992 only - Oct 25 0:00 1:00 S 33758787SruRule Brazil 1993 only - Jan 31 0:00 0 - 33843014Swollman# Decree <a href="http://pcdsh01.on.br/HV942.htm">942</a> (1993-09-28) 33943543Swollman# adopted by same states, plus AM. 34043543Swollman# Decree <a href="http://pcdsh01.on.br/HV1252.htm">1,252</a> (1994-09-22) 34143543Swollman# adopted by same states, minus AM. 34243543Swollman# Decree <a href="http://pcdsh01.on.br/HV1636.htm">1,636</a> (1995-09-14) 34343543Swollman# adopted by same states, plus TO. 34443543Swollman# Decree <a href="http://pcdsh01.on.br/HV1674.htm">1,674</a> (1995-10-13) 34543543Swollman# adds AL, SE. 34658787SruRule Brazil 1993 1995 - Oct Sun>=11 0:00 1:00 S 34758787SruRule Brazil 1994 1995 - Feb Sun>=15 0:00 0 - 34858787SruRule Brazil 1996 only - Feb 11 0:00 0 - 34943543Swollman# Decree <a href="http://pcdsh01.on.br/HV2000.htm">2,000</a> (1996-09-04) 35043543Swollman# adopted by same states, minus AL, SE. 35158787SruRule Brazil 1996 only - Oct 6 0:00 1:00 S 35258787SruRule Brazil 1997 only - Feb 16 0:00 0 - 35343014Swollman# From Daniel C. Sobral <dcs@gns.com.br> (1998-02-12): 35443014Swollman# In 1997, the DS began on October 6. The stated reason was that 35543014Swollman# because international television networks ignored Brazil's policy on DS, 35643014Swollman# they bought the wrong times on satellite for coverage of Pope's visit. 35743014Swollman# This year, the ending date of DS was postponed to March 1 35843014Swollman# to help dealing with the shortages of electric power. 35943014Swollman# 36043014Swollman# From Paul Eggert (1998-02-25): 36143014Swollman# <a href="http://churchnet.ucsm.ac.uk/news/files2/news165.htm"> 36243014Swollman# Brazil Prepares for Papal Visit 36343014Swollman# </a>, 36443014Swollman# Church Net UK (1997-10-02). 36543014Swollman# 36643543Swollman# Decree 2,317 (1997-09-04), adopted by same states. 36758787SruRule Brazil 1997 only - Oct 6 0:00 1:00 S 36843543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/HV2495.JPG">2,495</a> 36943014Swollman# (1998-02-10) 37058787SruRule Brazil 1998 only - Mar 1 0:00 0 - 37143543Swollman# Decree <a href="http://pcdsh01.on.br/figuras/Hv98.jpg">2,780</a> (1998-09-11) 37258787Sru# adopted by the same states as before. 37358787SruRule Brazil 1998 only - Oct 11 0:00 1:00 S 37458787SruRule Brazil 1999 only - Feb 21 0:00 0 - 37558787Sru# Decree <a href="http://pcdsh01.on.br/figuras/HV3150.gif">3,150</a> 37658787Sru# (1999-08-23) adopted by same states. 37758787Sru# Decree <a href="http://pcdsh01.on.br/DecHV99.gif">3,188</a> (1999-09-30) 37867578Swollman# adds SE, AL, PB, PE, RN, CE, PI, MA and RR. 37967578SwollmanRule Brazil 1999 only - Oct 3 0:00 1:00 S 38067578SwollmanRule Brazil 2000 only - Feb 27 0:00 0 - 38167578Swollman# Decree <a href="http://pcdsh01.on.br/DEC3592.htm">3,592</a> (2000-09-06) 38267578Swollman# adopted by the same states as before. 38375267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3630.jpg">3,630</a> (2000-10-13) 38475267Swollman# repeals DST in PE and RR, effective 2000-10-15 00:00. 38575267Swollman# Decree <a href="http://pcdsh01.on.br/Dec3632.jpg">3,632</a> (2000-10-17) 38675267Swollman# repeals DST in SE, AL, PB, RN, CE, PI and MA, effective 2000-10-22 00:00. 38775267Swollman# 38858787Sru# These give only one year's rules. After that, the rules are guesses 38958787Sru# and are quite possibly wrong, but are more likely than no DST at all. 39067578SwollmanRule Brazil 2000 max - Oct Sun>=8 0:00 1:00 S 39167578SwollmanRule Brazil 2001 max - Feb Sun>=15 0:00 0 - 39220094Swollman 39343014Swollman 3942742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 39520094Swollman# 39675267Swollman# Atlantic islands: Fernando de Noronha, Trindade, Martin Vaz, 39775267Swollman# Atol das Rocas, and Penedos de Sao Pedro e Sao Paulo 3982742SwollmanZone America/Noronha -2:09:40 - LMT 1914 39958787Sru -2:00 Brazil FN%sT 1990 Sep 17 40058787Sru -2:00 - FNT 40120094Swollman# 40258787Sru# Amapa (AP), east Para (PA) 40375267Swollman# East Para includes Belem, Maraba, Serra Norte, and Sao Felix do Xingu. 40443543SwollmanZone America/Belem -3:13:56 - LMT 1914 40558787Sru -3:00 Brazil BR%sT 1988 Sep 12 40658787Sru -3:00 - BRT 40743543Swollman# 40858787Sru# Maranhao (MA), Piaui (PI), Ceara (CE), Rio Grande do Norte (RN), 40975267Swollman# Paraiba (PB) 41020094SwollmanZone America/Fortaleza -2:34:00 - LMT 1914 41158787Sru -3:00 Brazil BR%sT 1990 Sep 17 41258787Sru -3:00 - BRT 1999 Sep 30 41375267Swollman -3:00 Brazil BR%sT 2000 Oct 22 41475267Swollman -3:00 - BRT 41520094Swollman# 41675267Swollman# Pernambuco (PE) (except Atlantic islands) 41775267SwollmanZone America/Recife -2:19:36 - LMT 1914 41875267Swollman -3:00 Brazil BR%sT 1990 Sep 17 41975267Swollman -3:00 - BRT 1999 Sep 30 42075267Swollman -3:00 Brazil BR%sT 2000 Oct 15 42175267Swollman -3:00 - BRT 42275267Swollman# 42358787Sru# Tocantins (TO) 42443543SwollmanZone America/Araguaina -3:12:48 - LMT 1914 42558787Sru -3:00 Brazil BR%sT 1990 Sep 17 42658787Sru -3:00 - BRT 1995 Sep 14 42758787Sru -3:00 Brazil BR%sT 42820094Swollman# 42958787Sru# Alagoas (AL), Sergipe (SE) 43043543SwollmanZone America/Maceio -2:22:52 - LMT 1914 43158787Sru -3:00 Brazil BR%sT 1990 Sep 17 43258787Sru -3:00 - BRT 1995 Oct 13 43358787Sru -3:00 Brazil BR%sT 1996 Sep 4 43458787Sru -3:00 - BRT 1999 Sep 30 43575267Swollman -3:00 Brazil BR%sT 2000 Oct 22 43675267Swollman -3:00 - BRT 43743543Swollman# 43858787Sru# Bahia (BA), Goias (GO), Distrito Federal (DF), Minas Gerais (MG), 43958787Sru# Espirito Santo (ES), Rio de Janeiro (RJ), Sao Paulo (SP), Parana (PR), 44058787Sru# Santa Catarina (SC), Rio Grande do Sul (RS) 4412742SwollmanZone America/Sao_Paulo -3:06:28 - LMT 1914 44258787Sru -3:00 Brazil BR%sT 1963 Oct 23 00:00 44358787Sru -3:00 1:00 BRST 1964 44458787Sru -3:00 Brazil BR%sT 44520094Swollman# 44620094Swollman# Mato Grosso, Mato Grosso do Sul 44720094SwollmanZone America/Cuiaba -3:44:20 - LMT 1914 44858787Sru -4:00 Brazil AM%sT 44920094Swollman# 45058787Sru# west Para (PA), Rondonia (RO) 45175267Swollman# West Para includes Altamira, Oribidos, Prainha, Oriximina, and Santarem. 45243543SwollmanZone America/Porto_Velho -4:15:36 - LMT 1914 45358787Sru -4:00 Brazil AM%sT 1988 Sep 12 45458787Sru -4:00 - AMT 45543543Swollman# 45658787Sru# Roraima (RR) 45758787SruZone America/Boa_Vista -4:02:40 - LMT 1914 45858787Sru -4:00 Brazil AM%sT 1988 Sep 12 45958787Sru -4:00 - AMT 1999 Sep 30 46075267Swollman -4:00 Brazil AM%sT 2000 Oct 15 46175267Swollman -4:00 - AMT 46258787Sru# 46375267Swollman# east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto 4642742SwollmanZone America/Manaus -4:00:04 - LMT 1914 46558787Sru -4:00 Brazil AM%sT 1988 Sep 12 46658787Sru -4:00 - AMT 1993 Sep 28 46758787Sru -4:00 Brazil AM%sT 1994 Sep 22 46858787Sru -4:00 - AMT 46920094Swollman# 47075267Swollman# west Amazonas (AM): Atalaia do Norte, Boca do Maoco, Benjamin Constant, 47175267Swollman# Eirunepe, Envira, Ipixuna 47275267SwollmanZone America/Eirunepe -4:39:28 - LMT 1914 47375267Swollman -5:00 Brazil AC%sT 1988 Sep 12 47475267Swollman -5:00 - ACT 1993 Sep 28 47575267Swollman -5:00 Brazil AC%sT 1994 Sep 22 47675267Swollman -5:00 - ACT 47775267Swollman# 47858787Sru# Acre (AC) 47975267SwollmanZone America/Rio_Branco -4:31:12 - LMT 1914 48058787Sru -5:00 Brazil AC%sT 1988 Sep 12 48158787Sru -5:00 - ACT 4822742Swollman 4832742Swollman 4842742Swollman# Chile 4852742Swollman 48614343Swollman# From Eduardo Krell (1995-10-19): 48714343Swollman# The law says to switch to DST at midnight [24:00] on the second SATURDAY 48814343Swollman# of October.... The law is the same for March and October. 48943014Swollman# (1998-09-29): 49043014Swollman# Because of the drought this year, the government decided to go into 49143014Swollman# DST earlier (saturday 9/26 at 24:00). This is a one-time change only ... 49243014Swollman# (unless there's another dry season next year, I guess). 4932742Swollman 49458787Sru# From Julio I. Pacheco Troncoso (1999-03-18): 49558787Sru# Because of the same drought, the government decided to end DST later, 49658787Sru# on April 3, (one-time change). 49758787Sru 49875267Swollman# From Gwillim Law (2001-02-20): 49975267Swollman# I came across a Chilean on-line newspaper, La Tercera. Its 50075267Swollman# <a href="http://www.tercera.cl/diario/1998/03/13/extras.html"> 50175267Swollman# 1998-03-13 issue 50275267Swollman# </a>, says (my translation): 50375267Swollman# "At 24:00 (midnight) tomorrow (Saturday) - 22:00 in the insular 50475267Swollman# territory [Easter Island, Juan Fernandez, etc.] - winter time will 50575267Swollman# begin in the entire country." 50675267Swollman 50775267Swollman# From Paul Eggert (2001-02-21): 50875267Swollman# Assume this rule has been used since DST was introduced in the islands. 50975267Swollman 5102742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 51158787SruRule Chile 1918 only - Sep 1 0:00 1:00 S 51258787SruRule Chile 1919 only - Jul 2 0:00 0 - 51358787SruRule Chile 1927 1931 - Sep 1 0:00 1:00 S 51458787SruRule Chile 1928 1932 - Apr 1 0:00 0 - 51575267SwollmanRule Chile 1969 1997 - Oct Sun>=9 4:00u 1:00 S 51675267SwollmanRule Chile 1970 1998 - Mar Sun>=9 3:00u 0 - 51775267SwollmanRule Chile 1998 only - Sep 27 4:00u 1:00 S 51875267SwollmanRule Chile 1999 only - Apr 4 3:00u 0 - 51975267SwollmanRule Chile 1999 max - Oct Sun>=9 4:00u 1:00 S 52075267SwollmanRule Chile 2000 max - Mar Sun>=9 3:00u 0 - 52120094Swollman# IATA SSIM anomalies: (1990-09) says 1990-09-16; (1992-02) says 1992-03-14; 52258787Sru# (1996-09) says 1998-03-08. Ignore these. 5232742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 5242742SwollmanZone America/Santiago -4:42:40 - LMT 1890 52519878Swollman -4:42:40 - SMT 1910 # Santiago Mean Time 52619878Swollman -5:00 Chile CL%sT 1932 Sep # Chile Time 52719878Swollman -4:00 Chile CL%sT 5282742SwollmanZone Pacific/Easter -7:17:28 - LMT 1890 # Mataveri 52919878Swollman -7:17:28 - MMT 1932 Sep # Mataveri Mean Time 53019878Swollman -7:00 Chile EAS%sT 1982 Mar 14 # Easter I Time 53119878Swollman -6:00 Chile EAS%sT 5322742Swollman# 5332742Swollman# Whitman says Juan Fernandez Is are like America/Santiago. 5342742Swollman# San Ambrosio, San Felix 5352742Swollman# no information; probably like America/Santiago 5362742Swollman 5372742Swollman 5382742Swollman# Colombia 53958787Sru# Shanks specifies 24:00 for 1992 transition times; go with IATA, 54058787Sru# as it seems implausible to change clocks at midnight New Year's Eve. 54120094Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 54220094SwollmanRule CO 1992 only - May 2 0:00 1:00 S 54320094SwollmanRule CO 1992 only - Dec 31 0:00 0 - 5442742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 5452742SwollmanZone America/Bogota -4:56:20 - LMT 1884 Mar 13 54619878Swollman -4:56:20 - BMT 1914 Nov 23 # Bogota Mean Time 54720094Swollman -5:00 CO CO%sT # Colombia Time 5482742Swollman# Malpelo, Providencia, San Andres 5492742Swollman# no information; probably like America/Bogota 5502742Swollman 5512742Swollman# Curacao 55258787Sru# Shanks says that Bottom and Oranjestad have been at -4:00 since 55343014Swollman# standard time was introduced on 1912-03-02; and that Kralendijk and Rincon 55443014Swollman# used Kralendijk Mean Time (-4:33:08) from 1912-02-02 to 1965-01-01. 55543014Swollman# This all predates our 1970 cutoff, though. 5562742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 5572742SwollmanZone America/Curacao -4:35:44 - LMT 1912 Feb 12 # Willemstad 55819878Swollman -4:30 - ANT 1965 # Netherlands Antilles Time 5592742Swollman -4:00 - AST 5602742Swollman 5612742Swollman# Ecuador 5622742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 5632742SwollmanZone America/Guayaquil -5:19:20 - LMT 1890 56419878Swollman -5:14:00 - QMT 1931 # Quito Mean Time 56519878Swollman -5:00 - ECT # Ecuador Time 5662742SwollmanZone Pacific/Galapagos -5:58:24 - LMT 1931 # Puerto Baquerizo Moreno 56719878Swollman -5:00 - ECT 1986 56819878Swollman -6:00 - GALT # Galapagos Time 5692742Swollman 5702742Swollman# Falklands 57175267Swollman 57275267Swollman# From Paul Eggert (2001-03-05): 57375267Swollman# Between 1990 and 2000 inclusive, Shanks and the IATA agree except 57475267Swollman# the IATA gives 1996-09-08. Go with Shanks. 57575267Swollman 57675267Swollman# From Falkland Islands Government Office, London (2001-01-22) 57775267Swollman# via Jesper Norgaard: 57875267Swollman# ... the clocks revert back to Local Mean Time at 2 am on Sunday 15 57975267Swollman# April 2001 and advance one hour to summer time at 2 am on Sunday 2 58075267Swollman# September. It is anticipated that the clocks will revert back at 2 58175267Swollman# am on Sunday 21 April 2002 and advance to summer time at 2 am on 58275267Swollman# Sunday 1 September. 58375267Swollman 58475267Swollman# From Rives McDow (2001-02-13): 58575267Swollman# 58675267Swollman# I have communicated several times with people there, and the last 58775267Swollman# time I had communications that was helpful was in 1998. Here is 58875267Swollman# what was said then: 58975267Swollman# 59075267Swollman# "The general rule was that Stanley used daylight saving and the Camp 59175267Swollman# did not. However for various reasons many people in the Camp have 59275267Swollman# started to use daylight saving (known locally as 'Stanley Time') 59375267Swollman# There is no rule as to who uses daylight saving - it is a matter of 59475267Swollman# personal choice and so it is impossible to draw a map showing who 59575267Swollman# uses it and who does not. Any list would be out of date as soon as 59675267Swollman# it was produced. This year daylight saving ended on April 18/19th 59775267Swollman# and started again on September 12/13th. I do not know what the rule 59875267Swollman# is, but can find out if you like. We do not change at the same time 59975267Swollman# as UK or Chile." 60075267Swollman# 60175267Swollman# I did have in my notes that the rule was "Second Saturday in Sep at 60275267Swollman# 0:00 until third Saturday in Apr at 0:00". I think that this does 60375267Swollman# not agree in some cases with Shanks; is this true? 60475267Swollman# 60575267Swollman# Also, there is no mention in the list that some areas in the 60675267Swollman# Falklands do not use DST. I have found in my communications there 60775267Swollman# that these areas are on the western half of East Falkland and all of 60875267Swollman# West Falkland. Stanley is the only place that consistently observes 60975267Swollman# DST. Again, as in other places in the world, the farmers don't like 61075267Swollman# it. West Falkland is almost entirely sheep farmers. 61175267Swollman# 61275267Swollman# I know one lady there that keeps a list of which farm keeps DST and 61375267Swollman# which doesn't each year. She runs a shop in Stanley, and says that 61475267Swollman# the list changes each year. She uses it to communicate to her 61575267Swollman# customers, catching them when they are home for lunch or dinner. 61675267Swollman 61775267Swollman# From Paul Eggert (2001-03-05): 61875267Swollman# For now, we'll just record the time in Stanley, since we have no 61975267Swollman# better info. 62075267Swollman 6212742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 62219878SwollmanRule Falk 1937 1938 - Sep lastSun 0:00 1:00 S 62319878SwollmanRule Falk 1938 1942 - Mar Sun>=19 0:00 0 - 62419878SwollmanRule Falk 1939 only - Oct 1 0:00 1:00 S 62519878SwollmanRule Falk 1940 1942 - Sep lastSun 0:00 1:00 S 62619878SwollmanRule Falk 1943 only - Jan 1 0:00 0 - 62719878SwollmanRule Falk 1983 only - Sep lastSun 0:00 1:00 S 62819878SwollmanRule Falk 1984 1985 - Apr lastSun 0:00 0 - 62919878SwollmanRule Falk 1984 only - Sep 16 0:00 1:00 S 63075267SwollmanRule Falk 1985 2000 - Sep Sun>=9 0:00 1:00 S 63175267SwollmanRule Falk 1986 2000 - Apr Sun>=16 0:00 0 - 63275267SwollmanRule Falk 2001 max - Apr Sun>=15 2:00 0 - 63375267SwollmanRule Falk 2001 max - Sep Sun>=1 2:00 1:00 S 6342742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 6352742SwollmanZone Atlantic/Stanley -3:51:24 - LMT 1890 63619878Swollman -3:51:24 - SMT 1912 Mar 12 # Stanley Mean Time 63719878Swollman -4:00 Falk FK%sT 1983 May # Falkland Is Time 63819878Swollman -3:00 Falk FK%sT 1985 Sep 15 63919878Swollman -4:00 Falk FK%sT 6402742Swollman 6412742Swollman# French Guiana 6422742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 6432742SwollmanZone America/Cayenne -3:29:20 - LMT 1911 Jul 64419878Swollman -4:00 - GFT 1967 Oct # French Guiana Time 64519878Swollman -3:00 - GFT 6462742Swollman 6472742Swollman# Guyana 6482742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 6492742SwollmanZone America/Guyana -3:52:40 - LMT 1915 Mar # Georgetown 65019878Swollman -3:45 - GBGT 1966 May 26 # Br Guiana Time 65119878Swollman -3:45 - GYT 1975 Jul 31 # Guyana Time 65220094Swollman -3:00 - GYT 1991 65320094Swollman# IATA SSIM (1996-06) says -4:00. Assume a 1991 switch. 65420094Swollman -4:00 - GYT 6552742Swollman 6562742Swollman# Paraguay 65758787Sru# From Paul Eggert (1999-10-29): 65858787Sru# Shanks (1999) says that spring transitions are from 01:00 -> 02:00, 65958787Sru# and autumn transitions are from 00:00 -> 23:00. Go with earlier 66058787Sru# editions of Shanks, and with the IATA, who say transitions occur at 00:00. 6612742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 66258787SruRule Para 1975 1988 - Oct 1 0:00 1:00 S 66319878SwollmanRule Para 1975 1978 - Mar 1 0:00 0 - 66458787SruRule Para 1979 1991 - Apr 1 0:00 0 - 66519878SwollmanRule Para 1989 only - Oct 22 0:00 1:00 S 66620094SwollmanRule Para 1990 only - Oct 1 0:00 1:00 S 66720094SwollmanRule Para 1991 only - Oct 6 0:00 1:00 S 66820094SwollmanRule Para 1992 only - Mar 1 0:00 0 - 66920094SwollmanRule Para 1992 only - Oct 5 0:00 1:00 S 67020094SwollmanRule Para 1993 only - Mar 31 0:00 0 - 67130711SwollmanRule Para 1993 1995 - Oct 1 0:00 1:00 S 67220094SwollmanRule Para 1994 1995 - Feb lastSun 0:00 0 - 67358787SruRule Para 1996 only - Mar 1 0:00 0 - 67475267Swollman# IATA SSIM (2000-02) says 1999-10-10; ignore this for now. 67567578Swollman# From Steffen Thorsen (2000-10-02): 67667578Swollman# I have three independent reports that Paraguay changed to DST this Sunday 67767578Swollman# (10-01). 67875267Swollman# 67975267Swollman# Translated by Gwillim Law (2001-02-27) from 68075267Swollman# <a href="http://www.diarionoticias.com.py/011000/nacional/naciona1.htm"> 68175267Swollman# Noticias, a daily paper in Asuncion, Paraguay (2000-10-01) 68275267Swollman# </a>: 68375267Swollman# Starting at 0:00 today, the clock will be set forward 60 minutes, in 68475267Swollman# fulfillment of Decree No. 7,273 of the Executive Power.... The time change 68575267Swollman# system has been operating for several years. Formerly there was a separate 68675267Swollman# decree each year; the new law has the same effect, but permanently. Every 68775267Swollman# year, the time will change on the first Sunday of October; likewise, the 68875267Swollman# clock will be set back on the first Sunday of March. 68975267Swollman# 69075267Swollman# From Jesper Norgaard (2001-03-06) [an official URL saying similar things]: 69175267Swollman# http://gateway.abc.com.py:8000/pub/pag04.mbr/artic?FHA=2001-03-03-02.24.52.900592 69275267Swollman# 69375267SwollmanRule Para 1996 max - Oct Sun>=1 0:00 1:00 S 69475267Swollman# IATA SSIM (1997-09) says Mar 1; go with Shanks. 69575267SwollmanRule Para 1997 only - Feb lastSun 0:00 0 - 69675267Swollman# Shanks says 1999-02-28; IATA SSIM (1999-02) says 1999-02-27, but 69775267Swollman# (1999-09) reports no date; go with above sources and Gerd Knops (2001-02-27). 69875267SwollmanRule Para 1998 max - Mar Sun>=1 0:00 0 - 69975267Swollman 7002742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 7012742SwollmanZone America/Asuncion -3:50:40 - LMT 1890 70219878Swollman -3:50:40 - AMT 1931 Oct 10 # Asuncion Mean Time 70319878Swollman -4:00 - PYT 1972 Oct # Paraguay Time 70419878Swollman -3:00 - PYT 1974 Apr 70519878Swollman -4:00 Para PY%sT 7062742Swollman 7072742Swollman# Peru 7082742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 70919878SwollmanRule Peru 1938 only - Jan 1 0:00 1:00 S 71019878SwollmanRule Peru 1938 only - Apr 1 0:00 0 - 71119878SwollmanRule Peru 1938 1939 - Sep lastSun 0:00 1:00 S 71219878SwollmanRule Peru 1939 1940 - Mar Sun>=24 0:00 0 - 71319878SwollmanRule Peru 1987 only - Jan 1 0:00 1:00 S 71419878SwollmanRule Peru 1987 only - Apr 1 0:00 0 - 71519878SwollmanRule Peru 1990 only - Jan 1 0:00 1:00 S 71619878SwollmanRule Peru 1990 only - Apr 1 0:00 0 - 71758787Sru# IATA is ambiguous for 1993/1995; go with Shanks. 71858787SruRule Peru 1994 only - Jan 1 0:00 1:00 S 71958787SruRule Peru 1994 only - Apr 1 0:00 0 - 7202742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 7212742SwollmanZone America/Lima -5:08:12 - LMT 1890 72219878Swollman -5:09 - LMT 1908 Jul 28 # Lima Mean Time 72319878Swollman -5:00 Peru PE%sT # Peru Time 7242742Swollman 7252742Swollman# South Georgia 7262742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 7272742SwollmanZone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken 72819878Swollman -2:00 - GST # South Georgia Time 7292742Swollman 7302742Swollman# South Sandwich Is 73158787Sru# uninhabited; scientific personnel have wintered 7322742Swollman 7332742Swollman# Suriname 7342742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 7352742SwollmanZone America/Paramaribo -3:40:40 - LMT 1911 7362742Swollman -3:40:52 - PMT 1935 # Paramaribo Mean Time 7372742Swollman -3:40:36 - PMT 1945 Oct # The capital moved? 73819878Swollman -3:30 - NEGT 1975 Nov 20 # Dutch Guiana Time 73919878Swollman -3:30 - SRT 1984 Oct # Suriname Time 74019878Swollman -3:00 - SRT 7412742Swollman 7422742Swollman# Trinidad and Tobago 7432742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 7442742SwollmanZone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2 7452742Swollman -4:00 - AST 7462742Swollman 7472742Swollman# Uruguay 74819878Swollman# From Paul Eggert <eggert@twinsun.com> (1993-11-18): 7492742Swollman# Uruguay wins the prize for the strangest peacetime manipulation of the rules. 75058787Sru# From Shanks: 7512742Swollman# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S 7522742Swollman# Whitman gives 1923 Oct 1; go with Shanks. 75319878SwollmanRule Uruguay 1923 only - Oct 2 0:00 0:30 HS 75419878SwollmanRule Uruguay 1924 1926 - Apr 1 0:00 0 - 75519878SwollmanRule Uruguay 1924 1925 - Oct 1 0:00 0:30 HS 75619878SwollmanRule Uruguay 1933 1935 - Oct lastSun 0:00 0:30 HS 7572742Swollman# Shanks gives 1935 Apr 1 0:00 and 1936 Mar 30 0:00; go with Whitman. 75819878SwollmanRule Uruguay 1934 1936 - Mar Sat>=25 23:30s 0 - 75919878SwollmanRule Uruguay 1936 only - Nov 1 0:00 0:30 HS 76019878SwollmanRule Uruguay 1937 1941 - Mar lastSun 0:00 0 - 7612742Swollman# Whitman gives 1937 Oct 3; go with Shanks. 76219878SwollmanRule Uruguay 1937 1940 - Oct lastSun 0:00 0:30 HS 7632742Swollman# Whitman gives 1941 Oct 24 - 1942 Mar 27, 1942 Dec 14 - 1943 Apr 13, 7642742Swollman# and 1943 Apr 13 ``to present time''; go with Shanks. 76519878SwollmanRule Uruguay 1941 only - Aug 1 0:00 0 - 76619878SwollmanRule Uruguay 1942 only - Jan 1 0:00 0:30 HS 76719878SwollmanRule Uruguay 1942 only - Dec 14 0:00 1:00 S 76819878SwollmanRule Uruguay 1943 only - Mar 14 0:00 0 - 76919878SwollmanRule Uruguay 1959 only - May 24 0:00 1:00 S 77019878SwollmanRule Uruguay 1959 only - Nov 15 0:00 0 - 77119878SwollmanRule Uruguay 1960 only - Jan 17 0:00 1:00 S 77219878SwollmanRule Uruguay 1960 only - Mar 6 0:00 0 - 77319878SwollmanRule Uruguay 1965 1967 - Apr Sun>=1 0:00 1:00 S 77419878SwollmanRule Uruguay 1965 only - Sep 26 0:00 0 - 77519878SwollmanRule Uruguay 1966 1967 - Oct 31 0:00 0 - 77619878SwollmanRule Uruguay 1968 1970 - May 27 0:00 0:30 HS 77719878SwollmanRule Uruguay 1968 1970 - Dec 2 0:00 0 - 77819878SwollmanRule Uruguay 1972 only - Apr 24 0:00 1:00 S 77919878SwollmanRule Uruguay 1972 only - Aug 15 0:00 0 - 78019878SwollmanRule Uruguay 1974 only - Mar 10 0:00 0:30 HS 78119878SwollmanRule Uruguay 1974 only - Dec 22 0:00 1:00 S 78219878SwollmanRule Uruguay 1976 only - Oct 1 0:00 0 - 78319878SwollmanRule Uruguay 1977 only - Dec 4 0:00 1:00 S 78419878SwollmanRule Uruguay 1978 only - Apr 1 0:00 0 - 78519878SwollmanRule Uruguay 1979 only - Oct 1 0:00 1:00 S 78619878SwollmanRule Uruguay 1980 only - May 1 0:00 0 - 78719878SwollmanRule Uruguay 1987 only - Dec 14 0:00 1:00 S 78819878SwollmanRule Uruguay 1988 only - Mar 14 0:00 0 - 78919878SwollmanRule Uruguay 1988 only - Dec 11 0:00 1:00 S 79019878SwollmanRule Uruguay 1989 only - Mar 12 0:00 0 - 79119878SwollmanRule Uruguay 1989 only - Oct 29 0:00 1:00 S 79258787Sru# Shanks says no DST was observed in 1990/1 and 1991/2, 79358787Sru# and that 1992/3's DST was from 10-25 to 03-01. Go with IATA. 79420094SwollmanRule Uruguay 1990 1992 - Mar Sun>=1 0:00 0 - 79520094SwollmanRule Uruguay 1990 1991 - Oct Sun>=21 0:00 1:00 S 79630711SwollmanRule Uruguay 1992 only - Oct 18 0:00 1:00 S 79720094SwollmanRule Uruguay 1993 only - Feb 28 0:00 0 - 7982742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 7992742SwollmanZone America/Montevideo -3:44:44 - LMT 1898 Jun 28 80019878Swollman -3:44:44 - MMT 1920 May 1 # Montevideo MT 80119878Swollman -3:30 Uruguay UY%sT 1942 Dec 14 # Uruguay Time 80219878Swollman -3:00 Uruguay UY%sT 8032742Swollman 8042742Swollman# Venezuela 8052742Swollman# Zone NAME GMTOFF RULES FORMAT [UNTIL] 8062742SwollmanZone America/Caracas -4:27:44 - LMT 1890 80719878Swollman -4:27:44 - CMT 1912 Feb 12 # Caracas Mean Time 80819878Swollman -4:30 - VET 1965 # Venezuela Time 80919878Swollman -4:00 - VET 810