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5722 Update timezone info db to 2015a
*** 122,132 ****
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
Rule US 1918 1919 - Oct lastSun 2:00 0 S
Rule US 1942 only - Feb 9 2:00 1:00 W # War
Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
! Rule US 1945 only - Sep 30 2:00 0 S
Rule US 1967 2006 - Oct lastSun 2:00 0 S
Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
Rule US 1974 only - Jan 6 2:00 1:00 D
Rule US 1975 only - Feb 23 2:00 1:00 D
Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
--- 122,132 ----
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
Rule US 1918 1919 - Oct lastSun 2:00 0 S
Rule US 1942 only - Feb 9 2:00 1:00 W # War
Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
! Rule US 1945 only - Sep lastSun 2:00 0 S
Rule US 1967 2006 - Oct lastSun 2:00 0 S
Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
Rule US 1974 only - Jan 6 2:00 1:00 D
Rule US 1975 only - Feb 23 2:00 1:00 D
Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
*** 275,284 ****
--- 275,290 ----
# set their watches and clocks on Eastern time." It quotes H.H. "Bubba"
# Roberts, city administrator in Phenix City. as saying "We are in the Central
# time zone, but we do go by the Eastern time zone because so many people work
# in Columbus."
+ # From Paul Eggert (2014-09-06):
+ # Monthly Notices of the Royal Astronomical Society 44, 4 (1884-02-08), 208
+ # says that New York City Hall time was 3 minutes 58.4 seconds fast of
+ # Eastern time (i.e., -4:56:01.6) just before the 1883 switch. Round to the
+ # nearest second.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
Rule NYC 1920 only - Mar lastSun 2:00 1:00 D
Rule NYC 1920 only - Oct lastSun 2:00 0 S
Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D
Rule NYC 1921 1954 - Sep lastSun 2:00 0 S
*** 983,1006 ****
# Jimmy Skaggs, _The Great Guano Rush_ (1994).
################################################################################
! # From Paul Eggert (2006-03-22):
! # A good source for time zone historical data outside the U.S. is
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
#
# 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 & Pottenger is the source for
- # entries through 1990, and IATA SSIM is the source for entries afterwards.
- #
# Other sources occasionally used include:
#
# Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
# which I found in the UCLA library.
--- 989,1012 ----
# Jimmy Skaggs, _The Great Guano Rush_ (1994).
################################################################################
! # From Paul Eggert (2014-10-31):
! #
! # Unless otherwise specified, the source for data through 1990 is:
# Thomas G. Shanks and Rique Pottenger, The International Atlas (6th edition),
# San Diego: ACS Publications, Inc. (2003).
+ # Unfortunately this book contains many errors and cites no sources.
#
# 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,
! # IATA SSIM is the source for entries after 1990.
#
# Other sources occasionally used include:
#
# Edward W. Whitman, World Time Differences,
# Whitman Publishing Co, 2 Niagara Av, Ealing, London (undated),
# which I found in the UCLA library.
*** 1093,1113 ****
# ...
# Nunavut
# An amendment to the Interpretation Act was registered on February 19/2007....
# http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
! # From Paul Eggert (2006-04-25):
# H. David Matthews and Mary Vincent's map
# "It's about TIME", _Canadian Geographic_ (September-October 1998)
! # http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
# contains detailed boundaries for regions observing nonstandard
# time and daylight saving time arrangements in Canada circa 1998.
#
! # INMS, the Institute for National Measurement Standards in Ottawa, has
! # information about standard and daylight saving time zones in Canada.
! # http://inms-ienm.nrc-cnrc.gc.ca/en/time_services/daylight_saving_e.php
! # (updated periodically).
# Its unofficial information is often taken from Matthews and Vincent.
# From Paul Eggert (2006-06-27):
# For now, assume all of DST-observing Canada will fall into line with the
# new US DST rules,
--- 1099,1118 ----
# ...
# Nunavut
# An amendment to the Interpretation Act was registered on February 19/2007....
# http://action.attavik.ca/home/justice-gn/attach/2007/gaz02part2.pdf
! # From Paul Eggert (2014-10-18):
# H. David Matthews and Mary Vincent's map
# "It's about TIME", _Canadian Geographic_ (September-October 1998)
! # http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp
# contains detailed boundaries for regions observing nonstandard
# time and daylight saving time arrangements in Canada circa 1998.
#
! # National Research Council Canada maintains info about time zones and DST.
! # http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html
! # http://www.nrc-cnrc.gc.ca/eng/services/time/faq/index.html#Q5
# Its unofficial information is often taken from Matthews and Vincent.
# From Paul Eggert (2006-06-27):
# For now, assume all of DST-observing Canada will fall into line with the
# new US DST rules,
*** 1968,1992 ****
# checking for more info, and will get back to you if I come up with
# more.
# [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
# From Gwillim Law (2005-05-21):
! # According to maps at
! # http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SWE.jpg
! # http://inms-ienm.nrc-cnrc.gc.ca/images/time_services/TZ01SSE.jpg
! # (both dated 2003), and
# http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
# (from a 1998 Canadian Geographic article), the de facto and de jure time
# for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
# round. Using Google, it's easy to find other websites that confirm this.
# I wasn't able to find how far back this time regimen goes, but since it
# predates the creation of Nunavut, it probably goes back many years....
# The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
#
! # From Paul Eggert (2005-07-26):
# For lack of better information, assume that Southampton Island observed
! # daylight saving only during wartime.
# From Chris Walton (2007-03-01):
# ... the community of Resolute (located on Cornwallis Island in
# Nunavut) moved from Central Time to Eastern Time last November.
# Basically the community did not change its clocks at the end of
--- 1973,1996 ----
# checking for more info, and will get back to you if I come up with
# more.
# [Also see <http://www.nunatsiaq.com/nunavut/nvt10309_06.html> (2001-03-09).]
# From Gwillim Law (2005-05-21):
! # According to ...
# http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp
# (from a 1998 Canadian Geographic article), the de facto and de jure time
# for Southampton Island (at the north end of Hudson Bay) is UTC-5 all year
# round. Using Google, it's easy to find other websites that confirm this.
# I wasn't able to find how far back this time regimen goes, but since it
# predates the creation of Nunavut, it probably goes back many years....
# The Inuktitut name of Coral Harbour is Sallit, but it's rarely used.
#
! # From Paul Eggert (2014-10-17):
# For lack of better information, assume that Southampton Island observed
! # daylight saving only during wartime. Gwillim Law's email also
! # mentioned maps now maintained by National Research Council Canada;
! # see above for an up-to-date link.
# From Chris Walton (2007-03-01):
# ... the community of Resolute (located on Cornwallis Island in
# Nunavut) moved from Central Time to Eastern Time last November.
# Basically the community did not change its clocks at the end of
*** 2118,2132 ****
###############################################################################
# Mexico
! # From Paul Eggert (2001-03-05):
# The Investigation and Analysis Service of the
# Mexican Library of Congress (MLoC) has published a
# history of Mexican local time (in Spanish)
! # http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/
#
# Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
# (In all cases we go with the MLoC.)
# S&P report that Baja was at -8:00 in 1922/1923.
# S&P say the 1930 transition in Baja was 1930-11-16.
--- 2122,2136 ----
###############################################################################
# Mexico
! # From Paul Eggert (2014-12-07):
# The Investigation and Analysis Service of the
# Mexican Library of Congress (MLoC) has published a
# history of Mexican local time (in Spanish)
! # http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm
#
# Here are the discrepancies between Shanks & Pottenger (S&P) and the MLoC.
# (In all cases we go with the MLoC.)
# S&P report that Baja was at -8:00 in 1922/1923.
# S&P say the 1930 transition in Baja was 1930-11-16.
*** 2291,2300 ****
--- 2295,2322 ----
# kilómetros, así como la Ciudad de Ensenada, Baja California, hacia el
# interior del país, la aplicación de este horario estacional surtirá
# efecto desde las dos horas del segundo domingo de marzo y concluirá a
# las dos horas del primer domingo de noviembre.
+ # From Steffen Thorsen (2014-12-08), translated by Gwillim Law:
+ # The Mexican state of Quintana Roo will likely change to EST in 2015.
+ #
+ # http://www.unioncancun.mx/articulo/2014/12/04/medio-ambiente/congreso-aprueba-una-hora-mas-de-sol-en-qroo
+ # "With this change, the time conflict that has existed between the municipios
+ # of Quintana Roo and the municipio of Felipe Carrillo Puerto may come to an
+ # end. The latter declared itself in rebellion 15 years ago when a time change
+ # was initiated in Mexico, and since then it has refused to change its time
+ # zone along with the rest of the country."
+ #
+ # From Steffen Thorsen (2015-01-14), translated by Gwillim Law:
+ # http://sipse.com/novedades/confirman-aplicacion-de-nueva-zona-horaria-para-quintana-roo-132331.html
+ # "...the new time zone will come into effect at two o'clock on the first Sunday
+ # of February, when we will have to advance the clock one hour from its current
+ # time..."
+ #
+ # Also, the new zone will not use DST.
+
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
Rule Mexico 1939 only - Feb 5 0:00 1:00 D
Rule Mexico 1939 only - Jun 25 0:00 0 S
Rule Mexico 1940 only - Dec 9 0:00 1:00 D
Rule Mexico 1941 only - Apr 1 0:00 0 S
*** 2311,2321 ****
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Quintana Roo; represented by Cancún
Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
-6:00 - CST 1981 Dec 23
-5:00 Mexico E%sT 1998 Aug 2 2:00
! -6:00 Mexico C%sT
# Campeche, Yucatán; represented by Mérida
Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
-6:00 - CST 1981 Dec 23
-5:00 - EST 1982 Dec 2
-6:00 Mexico C%sT
--- 2333,2344 ----
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Quintana Roo; represented by Cancún
Zone America/Cancun -5:47:04 - LMT 1922 Jan 1 0:12:56
-6:00 - CST 1981 Dec 23
-5:00 Mexico E%sT 1998 Aug 2 2:00
! -6:00 Mexico C%sT 2015 Feb 1 2:00
! -5:00 - EST
# Campeche, Yucatán; represented by Mérida
Zone America/Merida -5:58:28 - LMT 1922 Jan 1 0:01:32
-6:00 - CST 1981 Dec 23
-5:00 - EST 1982 Dec 2
-6:00 Mexico C%sT
*** 2983,2996 ****
# Jamaica
# Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an
# unspecified official document, and says "This time is used throughout the
# island". Go with Milne. Round to the nearest second as required by zic.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
! -5:00 - EST 1974 Apr 28 2:00
-5:00 US E%sT 1984
-5:00 - EST
# Martinique
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
--- 3006,3030 ----
# Jamaica
# Shanks & Pottenger give -5:07:12, but Milne records -5:07:10.41 from an
# unspecified official document, and says "This time is used throughout the
# island". Go with Milne. Round to the nearest second as required by zic.
+ #
+ # Shanks & Pottenger give April 28 for the 1974 spring-forward transition, but
+ # Lance Neita writes that Prime Minister Michael Manley decreed it January 5.
+ # Assume Neita meant Jan 6 02:00, the same as the US. Neita also writes that
+ # Manley's supporters associated this act with Manley's nickname "Joshua"
+ # (recall that in the Bible the sun stood still at Joshua's request),
+ # and with the Rod of Correction which Manley said he had received from
+ # Haile Selassie, Emperor of Ethiopia. See:
+ # Neita L. The politician in all of us. Jamaica Observer 2014-09-20
+ # http://www.jamaicaobserver.com/columns/The-politician-in-all-of-us_17573647
+ #
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Jamaica -5:07:11 - LMT 1890 # Kingston
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
! -5:00 - EST 1974
-5:00 US E%sT 1984
-5:00 - EST
# Martinique
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
*** 3114,3130 ****
# indicating that the normal ET rules are followed.
#
# From Paul Eggert (2014-08-19):
# The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See:
# http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
! # Model this as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Grand_Turk -4:44:32 - LMT 1890
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1979
! -5:00 US E%sT 2014 Nov 2 2:00
-4:00 - AST
# British Virgin Is
# Virgin Is
# See America/Port_of_Spain.
--- 3148,3168 ----
# indicating that the normal ET rules are followed.
#
# From Paul Eggert (2014-08-19):
# The 2014-08-13 Cabinet meeting decided to stay on UTC-4 year-round. See:
# http://tcweeklynews.com/daylight-savings-time-to-be-maintained-p5353-127.htm
! # Model this as a switch from EST/EDT to AST ...
! # From Chris Walton (2014-11-04):
! # ... the TCI government appears to have delayed the switch to
! # "permanent daylight saving time" by one year....
! # http://tcweeklynews.com/time-change-to-go-ahead-this-november-p5437-127.htm
#
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Grand_Turk -4:44:32 - LMT 1890
-5:07:11 - KMT 1912 Feb # Kingston Mean Time
-5:00 - EST 1979
! -5:00 US E%sT 2015 Nov Sun>=1 2:00
-4:00 - AST
# British Virgin Is
# Virgin Is
# See America/Port_of_Spain.