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freebsd/share/zoneinfo/southamerica
Garrett Wollman ba638f145a Spell Bogota correctly.
1996-04-02 16:15:32 +00:00

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# @(#)southamerica 7.11
# This data is by no means authoritative; if you think you know better,
# go ahead and edit the file (and please send any changes to
# tz@elsie.nci.nih.gov for general use in the future).
# From Paul Eggert <eggert@twinsun.com> (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)
# -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
#
# See the `africa' file for Zone naming conventions.
# 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 (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 Hernan G. Otero <hernan@isoft.com.ar> (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.
# 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
#
# From Hernan G. Otero <hernan@isoft.com.ar> (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 <hernan@isoft.com.ar> (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.
#
# 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 AR%sT
# ZONE-DESCR America Buenos_Aires Argentina All points
# 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
# ZONE-DESCR America Aruba All points
# what to do about overseas terrirories...?
# 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
# ZONE-DESCR America La_Paz Bolivia All points
# Brazil
# From Guy Harris:
# The OAG lists October 25, 1987 and February 12, 1988 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 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 <eggert@twinsun.com> (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.
# 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.
# ZONE-DESCR America Noronha Brazil Fernando De Noronha
# ZONE-DESCR America Sao_Paulo Brazil Eastern zone
# ZONE-DESCR America Manaus Brazil Western zone
# ZONE-DESCR America Porto_Acre Brazil Territory of Acre
# 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 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
# 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
# ZONE-DESCR America Santiago Chile All points
# ZONE-DESCR Pacific Easter Easter_Island All points
# 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
# ZONE-DESCR America Bogota Colombia All points
# 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
# ZONE-DESCR America Curacao Curacao All points
# 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
# ZONE-DESCR America Guayaquil Ecuador All points except:
# ZONE-DESCR Pacific Galapagos Ecuador Galapagos Islands
# 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
# ZONE-DESCR Atlantic Stanley Falkland_Islands All points
# 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
# ZONE-DESCR America Cayenne French_Guiana All points
# 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
# ZONE-DESCR America Guyana Guyana All points
# Paraguay
# From Bob Devine (January 28, 1988):
# Paraguay: First day in October to last in March. Midnight switch??
# Since 1980.
# From U. S. Naval Observatory (January 19, 1989):
# 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 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
# ZONE-DESCR America Asuncion Paraguay All points
# 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
# ZONE-DESCR America Lima Peru All points
# South Georgia
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Atlantic/South_Georgia -2:26:08 - LMT 1890 # Grytviken
-2:00 - FST
# ZONE-DESCR Atlantic South_Georgia South_Georgia All points
# 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 - DGST 1984 Oct # Dutch Guiana Std Time
-3:00 - EST
# ZONE-DESCR America Paramaibo Suriname All points
# Trinidad and Tobago
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Port_of_Spain -4:06:04 - LMT 1912 Mar 2
-4:00 - AST
# ZONE-DESCR America Port_of_Spain Trinidad_and_Tobago All points
# Uruguay
# From Paul Eggert <eggert@twinsun.com> (November 18, 1993):
# 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
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
# ZONE-DESCR America Montevideo Uruguay All points
# 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
# ZONE-DESCR America Caracas Venezuela All points
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