Deleted Added
full compact
northamerica (274563) northamerica (279707)
1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# also includes Central America and the Caribbean
5
6# This file is by no means authoritative; if you think you know better,
7# go ahead and edit the file (and please send any changes to
8# tz@iana.org for general use in the future). For more, please see

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119# U.S. government action. So even though the "US" rules have changed
120# in the latest release, other countries won't be affected.
121
122# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
123Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
124Rule US 1918 1919 - Oct lastSun 2:00 0 S
125Rule US 1942 only - Feb 9 2:00 1:00 W # War
126Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
1# This file is in the public domain, so clarified as of
2# 2009-05-17 by Arthur David Olson.
3
4# also includes Central America and the Caribbean
5
6# This file is by no means authoritative; if you think you know better,
7# go ahead and edit the file (and please send any changes to
8# tz@iana.org for general use in the future). For more, please see

--- 110 unchanged lines hidden (view full) ---

119# U.S. government action. So even though the "US" rules have changed
120# in the latest release, other countries won't be affected.
121
122# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
123Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
124Rule US 1918 1919 - Oct lastSun 2:00 0 S
125Rule US 1942 only - Feb 9 2:00 1:00 W # War
126Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
127Rule US 1945 only - Sep 30 2:00 0 S
127Rule US 1945 only - Sep lastSun 2:00 0 S
128Rule US 1967 2006 - Oct lastSun 2:00 0 S
129Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
130Rule US 1974 only - Jan 6 2:00 1:00 D
131Rule US 1975 only - Feb 23 2:00 1:00 D
132Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
133Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
134Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
135Rule US 2007 max - Nov Sun>=1 2:00 0 S

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2119 -8:00 NT_YK P%sT 1980
2120 -8:00 Canada P%sT
2121
2122
2123###############################################################################
2124
2125# Mexico
2126
128Rule US 1967 2006 - Oct lastSun 2:00 0 S
129Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
130Rule US 1974 only - Jan 6 2:00 1:00 D
131Rule US 1975 only - Feb 23 2:00 1:00 D
132Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
133Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
134Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
135Rule US 2007 max - Nov Sun>=1 2:00 0 S

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2119 -8:00 NT_YK P%sT 1980
2120 -8:00 Canada P%sT
2121
2122
2123###############################################################################
2124
2125# Mexico
2126
2127# From Paul Eggert (2001-03-05):
2127# From Paul Eggert (2014-12-07):
2128# The Investigation and Analysis Service of the
2129# Mexican Library of Congress (MLoC) has published a
2130# history of Mexican local time (in Spanish)
2128# The Investigation and Analysis Service of the
2129# Mexican Library of Congress (MLoC) has published a
2130# history of Mexican local time (in Spanish)
2131# http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/
2131# http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm
2132#
2133# Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
2134# (In all cases we go with the MLoC.)
2135# S&P report that Baja was at -8:00 in 1922/1923.
2136# S&P say the 1930 transition in Baja was 1930-11-16.
2137# S&P report no DST during summer 1931.
2138# S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
2139

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2292# En los municipios fronterizos que se encuentren ubicados en la franja
2293# fronteriza norte en el territorio comprendido entre la l��nea
2294# internacional y la l��nea paralela ubicada a una distancia de veinte
2295# kil��metros, as�� como la Ciudad de Ensenada, Baja California, hacia el
2296# interior del pa��s, la aplicaci��n de este horario estacional surtir��
2297# efecto desde las dos horas del segundo domingo de marzo y concluir�� a
2298# las dos horas del primer domingo de noviembre.
2299
2132#
2133# Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
2134# (In all cases we go with the MLoC.)
2135# S&P report that Baja was at -8:00 in 1922/1923.
2136# S&P say the 1930 transition in Baja was 1930-11-16.
2137# S&P report no DST during summer 1931.
2138# S&P report a transition at 1932-03-30 23:00, not 1932-04-01.
2139

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2292# En los municipios fronterizos que se encuentren ubicados en la franja
2293# fronteriza norte en el territorio comprendido entre la l��nea
2294# internacional y la l��nea paralela ubicada a una distancia de veinte
2295# kil��metros, as�� como la Ciudad de Ensenada, Baja California, hacia el
2296# interior del pa��s, la aplicaci��n de este horario estacional surtir��
2297# efecto desde las dos horas del segundo domingo de marzo y concluir�� a
2298# las dos horas del primer domingo de noviembre.
2299
2300# From Steffen Thorsen (2014-12-08), translated by Gwillim Law:
2301# The Mexican state of Quintana Roo will likely change to EST in 2015.
2302#
2303# http://www.unioncancun.mx/articulo/2014/12/04/medio-ambiente/congreso-aprueba-una-hora-mas-de-sol-en-qroo
2304# "With this change, the time conflict that has existed between the municipios
2305# of Quintana Roo and the municipio of Felipe Carrillo Puerto may come to an
2306# end. The latter declared itself in rebellion 15 years ago when a time change
2307# was initiated in Mexico, and since then it has refused to change its time
2308# zone along with the rest of the country."
2309#
2310# From Steffen Thorsen (2015-01-14), translated by Gwillim Law:
2311# http://sipse.com/novedades/confirman-aplicacion-de-nueva-zona-horaria-para-quintana-roo-132331.html
2312# "...the new time zone will come into effect at two o'clock on the first Sunday
2313# of February, when we will have to advance the clock one hour from its current
2314# time..."
2315#
2316# Also, the new zone will not use DST.
2317
2300# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2301Rule Mexico 1939 only - Feb 5 0:00 1:00 D
2302Rule Mexico 1939 only - Jun 25 0:00 0 S
2303Rule Mexico 1940 only - Dec 9 0:00 1:00 D
2304Rule Mexico 1941 only - Apr 1 0:00 0 S
2305Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War
2306Rule Mexico 1944 only - May 1 0:00 0 S
2307Rule Mexico 1950 only - Feb 12 0:00 1:00 D

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2312Rule Mexico 2001 only - Sep lastSun 2:00 0 S
2313Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
2314Rule Mexico 2002 max - Oct lastSun 2:00 0 S
2315# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2316# Quintana Roo; represented by Canc��n
2317Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
2318 -6:00 - CST 1981 Dec 23
2319 -5:00 Mexico E%sT 1998 Aug 2 2:00
2318# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
2319Rule Mexico 1939 only - Feb 5 0:00 1:00 D
2320Rule Mexico 1939 only - Jun 25 0:00 0 S
2321Rule Mexico 1940 only - Dec 9 0:00 1:00 D
2322Rule Mexico 1941 only - Apr 1 0:00 0 S
2323Rule Mexico 1943 only - Dec 16 0:00 1:00 W # War
2324Rule Mexico 1944 only - May 1 0:00 0 S
2325Rule Mexico 1950 only - Feb 12 0:00 1:00 D

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2330Rule Mexico 2001 only - Sep lastSun 2:00 0 S
2331Rule Mexico 2002 max - Apr Sun>=1 2:00 1:00 D
2332Rule Mexico 2002 max - Oct lastSun 2:00 0 S
2333# Zone NAME GMTOFF RULES FORMAT [UNTIL]
2334# Quintana Roo; represented by Canc��n
2335Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
2336 -6:00 - CST 1981 Dec 23
2337 -5:00 Mexico E%sT 1998 Aug 2 2:00
2320 -6:00 Mexico C%sT
2338 -6:00 Mexico C%sT 2015 Feb 1 2:00
2339 -5:00 - EST
2321# Campeche, Yucat��n; represented by M��rida
2322Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
2323 -6:00 - CST 1981 Dec 23
2324 -5:00 - EST 1982 Dec 2
2325 -6:00 Mexico C%sT
2326# Coahuila, Durango, Nuevo Le��n, Tamaulipas (near US border)
2327Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
2328 -6:00 - CST 1988

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2340# Campeche, Yucat��n; represented by M��rida
2341Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
2342 -6:00 - CST 1981 Dec 23
2343 -5:00 - EST 1982 Dec 2
2344 -6:00 Mexico C%sT
2345# Coahuila, Durango, Nuevo Le��n, Tamaulipas (near US border)
2346Zone America/Matamoros -6:40:00 - LMT 1921 Dec 31 23:20:00
2347 -6:00 - CST 1988

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