diff options
Diffstat (limited to 'timezone/northamerica')
| -rw-r--r-- | timezone/northamerica | 560 |
1 files changed, 140 insertions, 420 deletions
diff --git a/timezone/northamerica b/timezone/northamerica index 73e2470e0b..6e755b04b3 100644 --- a/timezone/northamerica +++ b/timezone/northamerica @@ -1,13 +1,11 @@ -# @(#)northamerica 8.1 -# <pre> - +# @(#)northamerica 7.69 # also includes Central America and the Caribbean # 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 (1999-03-22): +# From Paul Eggert <eggert@twinsun.com> (1999-03-22): # A reliable and entertaining source about time zones is # Derek Howse, Greenwich time and longitude, Philip Wilson Publishers (1997). @@ -26,16 +24,12 @@ # His proposal was adopted by the railroads on 1883-11-18 at 12:00, # and the most of the country soon followed suit. -# From Paul Eggert (2005-04-16): -# That 1883 transition occurred at 12:00 new time, not at 12:00 old time. -# See p 46 of David Prerau, Seize the daylight, Thunder's Mouth Press (2005). - -# From Paul Eggert (1995-12-19): +# From Paul Eggert <eggert@twinsun.com> (1995-12-19): # A good source for time zone historical data in the US is # Thomas G. Shanks, The American Atlas (5th edition), # San Diego: ACS Publications, Inc. (1991). # Make sure you have the errata sheet; the book is somewhat useless without it. -# It is the source for most of the pre-1991 US and Puerto Rico entries below. +# It is the source for the US and Puerto Rico entries below. # From Paul Eggert (2001-03-06): # Daylight Saving Time was first suggested as a joke by Benjamin Franklin @@ -54,8 +48,7 @@ # to push people into bed earlier, and get them up earlier, to make # them healthy, wealthy and wise in spite of themselves. # -# -- Robertson Davies, The diary of Samuel Marchbanks, -# Clarke, Irwin (1947), XIX, Sunday +# -- Robertson Davies, The Diary of Samuel Marchbanks (1947), XIX, Sunday # # For more about the first ten years of DST in the United States, see # Robert Garland's <a href="http://www.clpgh.org/exhibit/dst.html"> @@ -85,7 +78,7 @@ # Time' instead of the old familiar 'Eastern War Time.' Peace is wonderful." # </a> (August 1945) by way of confirmation. -# From Joseph Gallant citing +# From Joseph Gallant <notquite@hotmail.com>, citing # George H. Douglas, _The Early Days of Radio Broadcasting_ (1987): # At 7 P.M. (Eastern War Time) [on 1945-08-14], the networks were set # to switch to London for Attlee's address, but the American people @@ -112,46 +105,21 @@ # # He had scored a 20-second scoop on other broadcasters. -# From Arthur David Olson (2005-08-22): -# Paul has been careful to use the "US" rules only in those locations -# that are part of the United States; this reflects the real scope of -# U.S. government action. So even though the "US" rules have changed -# in the latest release, other countries won't be affected. - # 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 max - 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 -Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D -Rule US 2007 max - Mar Sun>=8 2:00 1:00 D -Rule US 2007 max - Nov Sun>=1 2:00 0 S - -# From Arthur David Olson, 2005-12-19 -# We generate the files specified below to guard against old files with -# obsolete information being left in the time zone binary directory. -# We limit the list to names that have appeared in previous versions of -# this time zone package. -# We do these as separate Zones rather than as Links to avoid problems if -# a particular place changes whether it observes DST. -# We put these specifications here in the northamerica file both to -# increase the chances that they'll actually get compiled and to -# avoid the need to duplicate the US rules in another file. - -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone EST -5:00 - EST -Zone MST -7:00 - MST -Zone HST -10:00 - HST -Zone EST5EDT -5:00 US E%sT -Zone CST6CDT -6:00 US C%sT -Zone MST7MDT -7:00 US M%sT -Zone PST8PDT -8:00 US P%sT +Rule US 1987 max - Apr Sun>=1 2:00 1:00 D +# <a href="http://thomas.loc.gov/cgi-bin/bdquery/z?d106:h.r.00177:"> +# H.R.177 +# </a> (introduced 1999-01-06) would change April to March in the above rule. # From Bob Devine (1988-01-28): # ...Alaska (and Hawaii) had the timezone names changed in 1967. @@ -229,53 +197,17 @@ Zone PST8PDT -8:00 US P%sT # Public law 106-564 (2000-12-23) introduced the abbreviation # "Chamorro Standard Time" for time in Guam and the Northern Marianas. # See the file "australasia". - -# From Arthur David Olson, 2005-08-09 -# The following was signed into law on 2005-08-08. -# -# H.R. 6, Energy Policy Act of 2005, SEC. 110. DAYLIGHT SAVINGS. -# (a) Amendment- Section 3(a) of the Uniform Time Act of 1966 (15 -# U.S.C. 260a(a)) is amended-- -# (1) by striking `first Sunday of April' and inserting `second -# Sunday of March'; and -# (2) by striking `last Sunday of October' and inserting `first -# Sunday of November'. -# (b) Effective Date- Subsection (a) shall take effect 1 year after the -# date of enactment of this Act or March 1, 2007, whichever is later. -# (c) Report to Congress- Not later than 9 months after the effective -# date stated in subsection (b), the Secretary shall report to Congress -# on the impact of this section on energy consumption in the United -# States. -# (d) Right to Revert- Congress retains the right to revert the -# Daylight Saving Time back to the 2005 time schedules once the -# Department study is complete. + # US eastern time, represented by New York # Connecticut, Delaware, District of Columbia, most of Florida, -# Georgia, southeast Indiana (Dearborn and Ohio counties), eastern Kentucky -# (except America/Kentucky/Louisville below), Maine, Maryland, Massachusetts, +# Georgia, southeast Indiana (Clark, Dearborn, Floyd, Harrison, and +# Ohio counties), eastern Kentucky, Maine, Maryland, Massachusetts, # New Hampshire, New Jersey, New York, North Carolina, Ohio, # Pennsylvania, Rhode Island, South Carolina, eastern Tennessee, # Vermont, Virginia, West Virginia -# From Dave Cantor (2004-11-02): -# Early this summer I had the occasion to visit the Mount Washington -# Observatory weather station atop (of course!) Mount Washington [, NH].... -# One of the staff members said that the station was on Eastern Standard Time -# and didn't change their clocks for Daylight Saving ... so that their -# reports will always have times which are 5 hours behind UTC. - -# From Paul Eggert (2005-08-26): -# According to today's Huntsville Times -# <http://www.al.com/news/huntsvilletimes/index.ssf?/base/news/1125047783228320.xml&coll=1> -# a few towns on Alabama's "eastern border with Georgia, such as Phenix City -# in Russell County, Lanett in Chambers County and some towns in Lee County, -# 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." - # 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 @@ -283,7 +215,7 @@ Rule NYC 1921 1966 - Apr lastSun 2:00 1:00 D Rule NYC 1921 1954 - Sep lastSun 2:00 0 S Rule NYC 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:03:58 +Zone America/New_York -4:56:02 - LMT 1883 Nov 18 12:00 -5:00 US E%sT 1920 -5:00 NYC E%sT 1942 -5:00 US E%sT 1946 @@ -309,7 +241,7 @@ Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 +Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1920 -6:00 Chicago C%sT 1936 Mar 1 2:00 -5:00 - EST 1936 Nov 15 2:00 @@ -318,17 +250,9 @@ Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24 -6:00 Chicago C%sT 1967 -6:00 US C%sT # Oliver County, ND switched from mountain to central time on 1992-10-25. -Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:14:48 +Zone America/North_Dakota/Center -6:45:12 - LMT 1883 Nov 18 12:00 -7:00 US M%sT 1992 Oct 25 02:00 -6:00 US C%sT -# From Paul Eggert (2006-01-20): -# The following is not implemented yet. -# What is the most populous city in that area? -# From http://www.statoids.com/tus.html (2006-01-20): -# 2003-10-26 02:00: All of Morton County, ND, and the part of Sioux -# County, ND east of ND route 31 moved from MT to CT. (The area -# around Fort Yates in Sioux County and the area around Mandan in -# Morton County were already in CT.) # US mountain time, represented by Denver # @@ -345,7 +269,7 @@ Rule Denver 1921 only - May 22 2:00 0 S Rule Denver 1965 1966 - Apr lastSun 2:00 1:00 D Rule Denver 1965 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00:04 +Zone America/Denver -6:59:56 - LMT 1883 Nov 18 12:00 -7:00 US M%sT 1920 -7:00 Denver M%sT 1942 -7:00 US M%sT 1946 @@ -365,7 +289,7 @@ Rule CA 1950 1966 - Apr lastSun 2:00 1:00 D Rule CA 1950 1961 - Sep lastSun 2:00 0 S Rule CA 1962 1966 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 +Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:00 -8:00 US P%sT 1946 -8:00 CA P%sT 1967 -8:00 US P%sT @@ -431,26 +355,10 @@ Zone America/Adak 12:13:21 - LMT 1867 Oct 18 -11:00 US B%sT 1983 Oct 30 2:00 -10:00 US AH%sT 1983 Nov 30 -10:00 US HA%sT -# The following switches don't quite make our 1970 cutoff. -# # Shanks writes that part of southwest Alaska (e.g. Aniak) # switched from -11:00 to -10:00 on 1968-09-22 at 02:00, # and another part (e.g. Akiak) made the same switch five weeks later. -# -# From David Flater (2004-11-09): -# In e-mail, 2004-11-02, Ray Hudson, historian/liaison to the Unalaska -# Historic Preservation Commission, provided this information, which -# suggests that Unalaska deviated from statutory time from early 1967 -# possibly until 1983: -# -# Minutes of the Unalaska City Council Meeting, January 10, 1967: -# "Except for St. Paul and Akutan, Unalaska is the only important -# location not on Alaska Standard Time. The following resolution was -# made by William Robinson and seconded by Henry Swanson: Be it -# resolved that the City of Unalaska hereby goes to Alaska Standard -# Time as of midnight Friday, January 13, 1967 (1 A.M. Saturday, -# January 14, Alaska Standard Time.) This resolution was passed with -# three votes for and one against." +# These switches don't quite make our 1970 cutoff. # Hawaii # @@ -492,7 +400,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00 # Shanks says the 1944 experiment came to an end on 1944-03-17. # Go with the Arizona State Library instead. -Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42 +Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 12:00 -7:00 US M%sT 1944 Jan 1 00:01 -7:00 - MST 1944 Apr 1 00:01 -7:00 US M%sT 1944 Oct 1 00:01 @@ -514,9 +422,9 @@ Link America/Denver America/Shiprock # Lemhi, Lincoln, Madison, Minidoka, Oneida, Owyhee, Payette, Power, # Teton, Twin Falls, Valley, Washington counties) and eastern Oregon # switched four weeks late in 1974. -# +# # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 +Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:00 -8:00 US P%sT 1923 May 13 2:00 -7:00 US M%sT 1974 -7:00 - MST 1974 Feb 3 2:00 @@ -527,55 +435,40 @@ Zone America/Boise -7:44:49 - LMT 1883 Nov 18 12:15:11 # For a map of Indiana's time zone regions, see: # <a href="http://www.mccsc.edu/time.html"> # What time is it in Indiana? -# </a> (2005-10-30) -# -# From Paul Eggert (2006-01-20): -# Since 1970, most of Indiana has been like America/Indiana/Indianapolis, -# with the following exceptions: -# -# - Gibson, Jasper, Lake, LaPorte, Newton, Porter, Posey, Spencer, -# Vandenburgh, and Warrick counties have been like America/Chicago. -# -# - Dearborn and Ohio counties have been like America/New_York. +# </a> (1999-04-06) # -# - Clark, Floyd, and Harrison counties have been like -# America/Kentucky/Louisville. -# -# - Daviess, Dubois, Knox, Martin, Perry, and Pulaski counties -# have been like America/Indiana/Vincennes. -# -# - Crawford, Pike, Starke, and Switzerland counties have their own time zone -# histories as noted below. -# -# Shanks partitioned Indiana into 345 regions, each with its own time history, -# and wrote ``Even newspaper reports present contradictory information.'' +# From Paul Eggert (1995-12-19): +# Indiana generally observes either EST all year, or CST/CDT, +# but areas near Cincinnati and Louisville use those cities' timekeeping +# and in 1969 and 1970 the whole state observed daylight time; +# and there are other exceptions as noted below. +# Shanks partitions Indiana into 345 regions, each with its own time history, +# and writes ``Even newspaper reports present contradictory information.'' # Fortunately, most of the complexity occurred before our cutoff date of 1970. # +# Since 1970, EST-only Indiana has been like America/Indianapolis, +# with exceptions noted below for Crawford, Starke, and Switzerland counties. +# The parts of Indiana not listed below have been like America/Chicago, +# America/Louisville, or America/New_York. +# # Other than Indianapolis, the Indiana place names are so nondescript # that they would be ambiguous if we left them at the `America' level. # So we reluctantly put them all in a subdirectory `America/Indiana'. +# +# Most of EST-only Indiana last observed DST in 1970. -# From Paul Eggert (2005-08-16): -# http://www.mccsc.edu/time.html says that Indiana will use DST starting 2006. - -# From Deborah Goldsmith (2006-01-18): -# http://dmses.dot.gov/docimages/pdf95/382329_web.pdf -# From Paul Eggert (2006-01-20): -# It says "DOT is relocating the time zone boundary in Indiana to move Starke, -# Pulaski, Knox, Daviess, Martin, Pike, Dubois, and Perry Counties from the -# Eastern Time Zone to the Central Time Zone.... The effective date of -# this rule is 2:OO a.m. EST Sunday, April 2, 2006, which is the -# changeover date from standard time to Daylight Saving Time." -# Strictly speaking, this means the affected counties will change their -# clocks twice that night, but this obviously is in error. The intent -# is that 01:59:59 EST be followed by 02:00:00 CDT. +# From Paul Eggert (2001-03-06), following a tip by Markus Kuhn: +# Pam Belluck reported in the New York Times (2001-01-31) that the +# Indiana Legislature is considering a bill to adopt DST statewide. +# Her article mentioned Vevay, whose post office observes a different +# time zone from Danner's Hardware across the street. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Indianapolis 1941 only - Jun 22 2:00 1:00 D Rule Indianapolis 1941 1954 - Sep lastSun 2:00 0 S Rule Indianapolis 1946 1954 - Apr lastSun 2:00 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 +Zone America/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1920 -6:00 Indianapolis C%sT 1942 -6:00 US C%sT 1946 @@ -584,66 +477,27 @@ Zone America/Indiana/Indianapolis -5:44:38 - LMT 1883 Nov 18 12:15:22 -6:00 - CST 1958 Apr 27 2:00 -5:00 - EST 1969 -5:00 US E%sT 1971 - -5:00 - EST 2006 - -5:00 US E%sT + -5:00 - EST +Link America/Indianapolis America/Indiana/Indianapolis # -# Eastern Crawford County, Indiana, left its clocks alone in 1974, -# as well as from 1976 through 2005. +# Part of Crawford County, Indiana, last observed DST in 1975, +# and left its clocks alone in 1974. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Marengo 1951 only - Apr lastSun 2:00 1:00 D Rule Marengo 1951 only - Sep lastSun 2:00 0 S Rule Marengo 1954 1960 - Apr lastSun 2:00 1:00 D Rule Marengo 1954 1960 - Sep lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:14:37 +Zone America/Indiana/Marengo -5:45:23 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1951 -6:00 Marengo C%sT 1961 Apr 30 2:00 -5:00 - EST 1969 -5:00 US E%sT 1974 Jan 6 2:00 -6:00 1:00 CDT 1974 Oct 27 2:00 -5:00 US E%sT 1976 - -5:00 - EST 2006 - -5:00 US E%sT -# -# Daviess, Dubois, Knox, Martin, Perry, and Pulaski Counties, Indiana, -# switched from eastern to central time in April 2006. -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER -Rule Vincennes 1946 only - Apr lastSun 2:00 1:00 D -Rule Vincennes 1946 only - Sep lastSun 2:00 0 S -Rule Vincennes 1953 1954 - Apr lastSun 2:00 1:00 D -Rule Vincennes 1953 1959 - Sep lastSun 2:00 0 S -Rule Vincennes 1955 only - May 1 0:00 1:00 D -Rule Vincennes 1956 1963 - Apr lastSun 2:00 1:00 D -Rule Vincennes 1960 only - Oct lastSun 2:00 0 S -Rule Vincennes 1961 only - Sep lastSun 2:00 0 S -Rule Vincennes 1962 1963 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Vincennes -5:50:07 - LMT 1883 Nov 18 12:09:53 - -6:00 US C%sT 1946 - -6:00 Vincennes C%sT 1964 Apr 26 2:00 - -5:00 - EST 1969 - -5:00 US E%sT 1971 - -5:00 - EST 2006 Apr 2 2:00 - -6:00 US C%sT -# -# Pike County, Indiana moved from central to eastern time in 1977, -# then switched back in 2006. -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER -Rule Pike 1955 only - May 1 0:00 1:00 D -Rule Pike 1955 1960 - Sep lastSun 2:00 0 S -Rule Pike 1956 1964 - Apr lastSun 2:00 1:00 D -Rule Pike 1961 1964 - Oct lastSun 2:00 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Petersburg -5:49:07 - LMT 1883 Nov 18 12:10:53 - -6:00 US C%sT 1955 - -6:00 Pike C%sT 1965 Apr 25 2:00 - -5:00 - EST 1966 Oct 30 2:00 - -6:00 US C%sT 1977 Oct 30 2:00 - -5:00 - EST 2006 Apr 2 2:00 - -6:00 US C%sT + -5:00 - EST # -# Starke County, Indiana moved from central to eastern time in 1991, -# then switched back in 2006. +# Starke County, Indiana # From Arthur David Olson (1991-10-28): # An article on page A3 of the Sunday, 1991-10-27 Washington Post # notes that Starke County switched from Central time to Eastern time as of @@ -655,25 +509,23 @@ Rule Starke 1955 1956 - Oct lastSun 2:00 0 S Rule Starke 1957 1958 - Sep lastSun 2:00 0 S Rule Starke 1959 1961 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:13:30 +Zone America/Indiana/Knox -5:46:30 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1947 -6:00 Starke C%sT 1962 Apr 29 2:00 -5:00 - EST 1963 Oct 27 2:00 -6:00 US C%sT 1991 Oct 27 2:00 - -5:00 - EST 2006 Apr 2 2:00 - -6:00 US C%sT + -5:00 - EST # -# Switzerland County, Indiana, did not observe DST from 1973 through 2005. +# Switzerland County, Indiana, last observed DST in 1972. # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:19:44 +Zone America/Indiana/Vevay -5:40:16 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1954 Apr 25 2:00 -5:00 - EST 1969 -5:00 US E%sT 1973 - -5:00 - EST 2006 - -5:00 US E%sT + -5:00 - EST # Part of Kentucky left its clocks alone in 1974. -# This also includes Clark, Floyd, and Harrison counties in Indiana. +# This also includes a part of Indiana immediately adjacent to Louisville. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Louisville 1921 only - May 1 2:00 1:00 D Rule Louisville 1921 only - Sep 1 2:00 0 S @@ -683,7 +535,7 @@ Rule Louisville 1946 only - Jun 2 2:00 0 S Rule Louisville 1950 1955 - Sep lastSun 2:00 0 S Rule Louisville 1956 1960 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 +Zone America/Louisville -5:43:02 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1921 -6:00 Louisville C%sT 1942 -6:00 US C%sT 1946 @@ -692,8 +544,9 @@ Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 -5:00 US E%sT 1974 Jan 6 2:00 -6:00 1:00 CDT 1974 Oct 27 2:00 -5:00 US E%sT +Link America/Louisville America/Kentucky/Louisville # -# Wayne County, Kentucky +# Wayne, Clinton, and Russell Counties, Kentucky # # From # <a href="http://www.lake-cumberland.com/life/archive/news990129time.shtml"> @@ -719,7 +572,7 @@ Zone America/Kentucky/Louisville -5:43:02 - LMT 1883 Nov 18 12:16:58 # Federal Register 65, 160 (2000-08-17), page 50154-50158. # </a> # -Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:20:36 +Zone America/Kentucky/Monticello -5:39:24 - LMT 1883 Nov 18 12:00 -6:00 US C%sT 1946 -6:00 - CST 1968 -6:00 US C%sT 2000 Oct 29 2:00 @@ -790,8 +643,7 @@ Zone America/Detroit -5:32:11 - LMT 1905 -5:00 - EST 1975 Apr 27 2:00 -5:00 US E%sT # -# Dickinson, Gogebic, Iron, and Menominee Counties, Michigan, -# switched from EST to CST/CDT in 1973. +# The Michigan border with Wisconsin switched from EST to CST/CDT in 1973. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER Rule Menominee 1946 only - Apr lastSun 2:00 1:00 D Rule Menominee 1946 only - Sep lastSun 2:00 0 S @@ -815,10 +667,21 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 # _Los Angeles Times_ (1998-11-10), A1, A10; it cites # Jimmy Skaggs, _The Great Guano Rush_ (1994). +# Old names, for S5 users + +# Link LINK-FROM LINK-TO +Link America/New_York EST5EDT +Link America/Chicago CST6CDT +Link America/Denver MST7MDT +Link America/Los_Angeles PST8PDT +Link America/Indianapolis EST +Link America/Phoenix MST +Link Pacific/Honolulu HST + ################################################################################ -# From Paul Eggert (1999-10-29): +# From Paul Eggert <eggert@twinsun.com> (1999-10-29): # A good source for time zone historical data outside the US is # Thomas G. Shanks, The International Atlas (5th edition), # San Diego: ACS Publications, Inc. (1999). @@ -846,7 +709,7 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 # Canada -# From Alain LaBont<e'> (1994-11-14): +# From Alain LaBont<e'> <ALB@immedia.ca> (1994-11-14): # I post here the time zone abbreviations standardized in Canada # for both English and French in the CAN/CSA-Z234.4-89 standard.... # @@ -875,42 +738,23 @@ Zone America/Menominee -5:50:27 - LMT 1885 Sep 18 12:00 # T: de Terre-Neuve # Y: du Yukon Yukon # -# From Paul Eggert (1994-11-22): +# From Paul Eggert <eggert@twinsun.com> (1994-11-22): # Alas, this sort of thing must be handled by localization software. # Unless otherwise specified, the data for Canada are all from Shanks. -# From Paul Eggert (2005-12-21): +# From Paul Eggert (2000-10-02): # H. David Matthews and Mary Vincent's map -# <a href="http://www.canadiangeographic.ca/Magazine/SO98/geomap.asp"> +# <a href="http://www.canadiangeographic.ca/SO98/geomap.htm"> # "It's about TIME", _Canadian Geographic_ (September-October 1998) # </a> 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 <a -# href="http://inms-ienm.nrc-cnrc.gc.ca/en/time_services/daylight_saving_e.php"> +# INMS, the Institute for National Measurement Standards in Ottawa, has +# <a href="http://www.nrc.ca/inms/time/tze.html"> # information about standard and daylight saving time zones in Canada. # </a> (updated periodically). # Its unofficial information is often taken from Matthews and Vincent. -# -# CBC News reported that Ontario and Manitoba have announced plans to -# follow the US change, and that Nova Scotia is considering it; see -# <http://www.cbc.ca/news/background/daylightsavingtime/> (2005-10-21). -# CBC news also reported that Prince Edward Island is the first -# province in Atlantic Canada to follow the US change, and that Quebec -# had agreed; see <http://www.cbc.ca/pei/story/pe_daylight_20051207.html> -# (2005-12-07). -# -# To reflect all this, the Canada and Winn rules have been adjusted to -# agree with the 2007 US change. This means we assume most of Canada -# will fall into line. However, Alberta, British Columbia, -# Newfoundland, Northwest Territories, and Yukon already have separate -# rules in our database, so for now we'll leave them alone, which -# means that we currently assume these regions will not change their -# rules and will disagree with the US starting in 2007. This -# assumption is probably incorrect, with the possible exception of -# Newfoundland. We plan to adjust the Edm, Vanc, StJohns, and NT_YK -# rules as the corresponding provinces make their announcements. # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Canada 1918 only - Apr 14 2:00 1:00 D @@ -919,10 +763,8 @@ Rule Canada 1942 only - Feb 9 2:00 1:00 W # War Rule Canada 1945 only - Aug 14 23:00u 1:00 P # Peace Rule Canada 1945 only - Sep 30 2:00 0 S Rule Canada 1974 1986 - Apr lastSun 2:00 1:00 D -Rule Canada 1974 2006 - Oct lastSun 2:00 0 S -Rule Canada 1987 2006 - Apr Sun>=1 2:00 1:00 D -Rule Canada 2007 max - Mar Sun>=8 2:00 1:00 D -Rule Canada 2007 max - Nov Sun>=1 2:00 0 S +Rule Canada 1974 max - Oct lastSun 2:00 0 S +Rule Canada 1987 max - Apr Sun>=1 2:00 1:00 D # Newfoundland (and far southeast Labrador) @@ -987,7 +829,7 @@ Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay -4:00 StJohns A%sT -# west Labrador, Nova Scotia, Prince Edward I +# west Labrador, New Brunswick, Nova Scotia, Prince Edward I # From Paul Eggert (1996-06-12): # Shanks writes that since 1970 most of this region has been like Halifax. @@ -996,48 +838,53 @@ Zone America/Goose_Bay -4:01:40 - LMT 1884 # Happy Valley-Goose Bay # Shanks also writes that Liverpool, NS was the only town in Canada to observe # DST in 1971 but not 1970; for now we'll assume this is a typo. +# From Paul Eggert (2000-10-02): +# INMS (2000-09-12) says that, since 1988 at least, New Brunswick switches +# at 00:01 local time. FIXME: verify and create a new Zone for this. + + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Halifax 1916 only - Apr 1 0:00 1:00 D -Rule Halifax 1916 only - Oct 1 0:00 0 S -Rule Halifax 1920 only - May 9 0:00 1:00 D -Rule Halifax 1920 only - Aug 29 0:00 0 S -Rule Halifax 1921 only - May 6 0:00 1:00 D -Rule Halifax 1921 1922 - Sep 5 0:00 0 S -Rule Halifax 1922 only - Apr 30 0:00 1:00 D -Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D -Rule Halifax 1923 only - Sep 4 0:00 0 S -Rule Halifax 1924 only - Sep 15 0:00 0 S -Rule Halifax 1925 only - Sep 28 0:00 0 S -Rule Halifax 1926 only - May 16 0:00 1:00 D -Rule Halifax 1926 only - Sep 13 0:00 0 S -Rule Halifax 1927 only - May 1 0:00 1:00 D -Rule Halifax 1927 only - Sep 26 0:00 0 S -Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D -Rule Halifax 1928 only - Sep 9 0:00 0 S -Rule Halifax 1929 only - Sep 3 0:00 0 S -Rule Halifax 1930 only - Sep 15 0:00 0 S -Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S -Rule Halifax 1932 only - May 1 0:00 1:00 D -Rule Halifax 1933 only - Apr 30 0:00 1:00 D -Rule Halifax 1933 only - Oct 2 0:00 0 S -Rule Halifax 1934 only - May 20 0:00 1:00 D -Rule Halifax 1934 only - Sep 16 0:00 0 S -Rule Halifax 1935 only - Jun 2 0:00 1:00 D -Rule Halifax 1935 only - Sep 30 0:00 0 S -Rule Halifax 1936 only - Jun 1 0:00 1:00 D -Rule Halifax 1936 only - Sep 14 0:00 0 S -Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D -Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S -Rule Halifax 1939 only - May 28 0:00 1:00 D -Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D -Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D -Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S -Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D -Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S -Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D -Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S -Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D -Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S +Rule Halifax 1916 only - Apr 1 0:00 1:00 D +Rule Halifax 1916 only - Oct 1 0:00 0 S +Rule Halifax 1920 only - May 9 0:00 1:00 D +Rule Halifax 1920 only - Aug 29 0:00 0 S +Rule Halifax 1921 only - May 6 0:00 1:00 D +Rule Halifax 1921 1922 - Sep 5 0:00 0 S +Rule Halifax 1922 only - Apr 30 0:00 1:00 D +Rule Halifax 1923 1925 - May Sun>=1 0:00 1:00 D +Rule Halifax 1923 only - Sep 4 0:00 0 S +Rule Halifax 1924 only - Sep 15 0:00 0 S +Rule Halifax 1925 only - Sep 28 0:00 0 S +Rule Halifax 1926 only - May 16 0:00 1:00 D +Rule Halifax 1926 only - Sep 13 0:00 0 S +Rule Halifax 1927 only - May 1 0:00 1:00 D +Rule Halifax 1927 only - Sep 26 0:00 0 S +Rule Halifax 1928 1931 - May Sun>=8 0:00 1:00 D +Rule Halifax 1928 only - Sep 9 0:00 0 S +Rule Halifax 1929 only - Sep 3 0:00 0 S +Rule Halifax 1930 only - Sep 15 0:00 0 S +Rule Halifax 1931 1932 - Sep Mon>=24 0:00 0 S +Rule Halifax 1932 only - May 1 0:00 1:00 D +Rule Halifax 1933 only - Apr 30 0:00 1:00 D +Rule Halifax 1933 only - Oct 2 0:00 0 S +Rule Halifax 1934 only - May 20 0:00 1:00 D +Rule Halifax 1934 only - Sep 16 0:00 0 S +Rule Halifax 1935 only - Jun 2 0:00 1:00 D +Rule Halifax 1935 only - Sep 30 0:00 0 S +Rule Halifax 1936 only - Jun 1 0:00 1:00 D +Rule Halifax 1936 only - Sep 14 0:00 0 S +Rule Halifax 1937 1938 - May Sun>=1 0:00 1:00 D +Rule Halifax 1937 1941 - Sep Mon>=24 0:00 0 S +Rule Halifax 1939 only - May 28 0:00 1:00 D +Rule Halifax 1940 1941 - May Sun>=1 0:00 1:00 D +Rule Halifax 1946 1949 - Sep lastSun 2:00 0 S +Rule Halifax 1946 1949 - Apr lastSun 2:00 1:00 D +Rule Halifax 1951 1954 - Sep lastSun 2:00 0 S +Rule Halifax 1951 1954 - Apr lastSun 2:00 1:00 D +Rule Halifax 1956 1959 - Sep lastSun 2:00 0 S +Rule Halifax 1956 1959 - Apr lastSun 2:00 1:00 D +Rule Halifax 1962 1973 - Apr lastSun 2:00 1:00 D +Rule Halifax 1962 1973 - Oct lastSun 2:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Halifax -4:14:24 - LMT 1902 Jun 15 -4:00 Halifax A%sT 1918 @@ -1053,43 +900,6 @@ Zone America/Glace_Bay -3:59:48 - LMT 1902 Jun 15 -4:00 Halifax A%sT 1974 -4:00 Canada A%sT -# New Brunswick - -# From Paul Eggert (2006-01-20): -# New Brunswick's Time Definition Act -# <http://www.gnb.ca/0062/PDF-acts/t-06.pdf> says they change at 00:01, and -# <http://www.canlii.org/nb/laws/sta/t-6/20030127/whole.html> makes it -# clear that this has been the case since at least 1993. -# For now, assume it started in 1993. The Office of the Premier announced -# <http://www.gnb.ca/cnb/news/pre/2005e1737pr.htm> (2005-12-23) -# that they will bring forward proposed amendments to harmonize with the US; -# for now assume that this will happen, but they'll still switch at 00:01. - -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule Moncton 1933 1935 - Jun Sun>=8 1:00 1:00 D -Rule Moncton 1933 1935 - Sep Sun>=8 1:00 0 S -Rule Moncton 1936 1938 - Jun Sun>=1 1:00 1:00 D -Rule Moncton 1936 1938 - Sep Sun>=1 1:00 0 S -Rule Moncton 1939 only - May 27 1:00 1:00 D -Rule Moncton 1939 1941 - Sep Sat>=21 1:00 0 S -Rule Moncton 1940 only - May 19 1:00 1:00 D -Rule Moncton 1941 only - May 4 1:00 1:00 D -Rule Moncton 1946 1972 - Apr lastSun 2:00 1:00 D -Rule Moncton 1946 1956 - Sep lastSun 2:00 0 S -Rule Moncton 1956 1972 - Oct lastSun 2:00 0 S -Rule Moncton 1993 2006 - Apr Sun>=1 0:01 1:00 D -Rule Moncton 1993 2006 - Oct lastSun 0:01 0 S -Rule Moncton 2007 max - Mar Sun>=8 0:01 1:00 D -Rule Moncton 2007 max - Nov Sun>=1 0:01 0 S -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone America/Moncton -4:19:08 - LMT 1883 Dec 9 - -5:00 - EST 1902 Jun 15 - -4:00 Canada A%sT 1933 - -4:00 Moncton A%sT 1942 - -4:00 Canada A%sT 1946 - -4:00 Moncton A%sT 1973 - -4:00 Canada A%sT 1993 - -4:00 Moncton A%sT # Ontario, Quebec @@ -1280,13 +1090,11 @@ Rule Winn 1963 only - Apr lastSun 2:00 1:00 D Rule Winn 1963 only - Sep 22 2:00 0 S Rule Winn 1966 1986 - Apr lastSun 2:00 1:00 D Rule Winn 1966 1986 - Oct lastSun 2:00 0 S -Rule Winn 1987 2006 - Apr Sun>=1 2:00s 1:00 D +Rule Winn 1987 max - Apr Sun>=1 2:00 1:00 D # From Paul Eggert (2000-10-02): # INMS (2000-09-12) says that, since 1988 at least, Manitoba switches from # DST at 03:00 local time. For now, assume it started in 1987. -Rule Winn 1987 2006 - Oct lastSun 2:00s 0 S -Rule Winn 2007 max - Mar Sun>=8 2:00s 1:00 D -Rule Winn 2007 max - Nov Sun>=1 2:00s 0 S +Rule Winn 1987 max - Oct lastSun 2:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 -6:00 Winn C%sT @@ -1315,7 +1123,7 @@ Zone America/Winnipeg -6:28:36 - LMT 1887 Jul 16 # Matthews and Vincent (1998) write that Denare Beach and Creighton # are like Winnipeg, in violation of Saskatchewan law. -# From W. Jones (1992-11-06): +# From W. Jones <jones@skdad.usask.ca> (1992-11-06): # The. . .below is based on information I got from our law library, the # provincial archives, and the provincial Community Services department. # A precise history would require digging through newspaper archives, and @@ -1433,7 +1241,7 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884 # From Paul Eggert (1999-10-29): # Dawson switched to PST in 1973. Inuvik switched to MST in 1979. -# Mathew Englander (1996-10-07) gives the following refs: +# Mathew Englander <mathew@io.org> (1996-10-07) gives the following refs: # * 1967. Paragraph 28(34)(g) of the Interpretation Act, S.C. 1967-68, # c. 7 defines Yukon standard time as UTC-9. This is still valid; # see Interpretation Act, R.S.C. 1985, c. I-21, s. 35(1). @@ -1458,6 +1266,8 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884 # </a> (1999) reports that Pangnirtung operates on eastern time, # and that Coral Harbour does not observe DST. We don't know when # Pangnirtung switched to eastern time; we'll guess 1995. +# We'll ignore the claim about Coral Harbour for now, +# since we have no further info. # From Rives McDow (1999-11-08): # On October 31, when the rest of Nunavut went to Central time, @@ -1532,23 +1342,6 @@ Zone America/Dawson_Creek -8:00:56 - LMT 1884 # 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. - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule NT_YK 1918 only - Apr 14 2:00 1:00 D Rule NT_YK 1918 only - Oct 27 2:00 0 S @@ -1572,9 +1365,6 @@ Zone America/Iqaluit -4:33:52 - LMT 1884 # Frobisher Bay before 1987 -5:00 NT_YK E%sT 1999 Oct 31 2:00 -6:00 Canada C%sT 2000 Oct 29 2:00 -5:00 Canada E%sT -Zone America/Coral_Harbour -5:32:40 - LMT 1884 - -5:00 NT_YK E%sT 1946 - -5:00 - EST Zone America/Rankin_Inlet -6:08:40 - LMT 1884 -6:00 NT_YK C%sT 2000 Oct 29 2:00 -5:00 - EST 2001 Apr 1 3:00 @@ -1614,7 +1404,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # Shanks reports that Baja was at -8:00 in 1922/1923. # Shanks says the 1930 transition in Baja was 1930-11-16. # Shanks reports no DST during summer 1931. -# Shanks reports a transition at 1932-03-30 23:00, not 1932-04-01. +# Shanks reports a transition at 1032-03-30 23:00, not 1932-04-01. # Shanks does not report transitions for Baja in 1945 or 1948. # Shanks reports southern Mexico transitions on 1981-12-01, not 12-23. # Shanks says Quintana Roo switched to -6:00 on 1982-12-02, and to -5:00 @@ -1630,7 +1420,7 @@ Zone America/Dawson -9:17:40 - LMT 1900 Aug 20 # Shanks gives 1942-04-01 instead of 1942-04-24, and omits the 1981 # and 1988 DST experiments. Go with spin.com.mx. -# From Alan Perry (1996-02-15): +# From Alan Perry <alan.perry@eng.sun.com> (1996-02-15): # A guy from our Mexico subsidiary finally found the Presidential Decree # outlining the timezone changes in Mexico. # @@ -1941,20 +1731,6 @@ Zone America/Costa_Rica -5:36:20 - LMT 1890 # San Jose # to DST--and one more hour on 1999-04-04--when the announcers will have # returned to Baltimore, which switches on that date.) -# From Evert van der Veer via Steffen Thorsen (2004-10-28): -# Cuba is not going back to standard time this year. -# From Paul Eggert (2004-10-28): -# http://www.granma.cu/ingles/2004/septiembre/juev30/41medid-i.html -# says that it's due to a problem at the Antonio Guiteras -# thermoelectric plant, and says "This October there will be no return -# to normal hours (after daylight saving time)". -# For now, let's assume that it's a one-year temporary measure. - -# From Carlos A. Carnero Delgado (2005-11-12): -# This year (just like in 2004-2005) there's no change in time zone -# adjustment in Cuba. We will stay in daylight saving time: -# http://www.granma.cu/espanol/2005/noviembre/mier9/horario.html - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D Rule Cuba 1928 only - Oct 10 0:00 0 S @@ -1983,9 +1759,8 @@ Rule Cuba 1991 1995 - Oct Sun>=8 0:00s 0 S Rule Cuba 1996 only - Oct 6 0:00s 0 S Rule Cuba 1997 only - Oct 12 0:00s 0 S Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D -Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S +Rule Cuba 1998 max - Oct lastSun 0:00s 0 S Rule Cuba 2000 max - Apr Sun>=1 0:00s 1:00 D -Rule Cuba 2006 max - Oct lastSun 0:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 @@ -2065,26 +1840,6 @@ Zone America/Guatemala -6:02:04 - LMT 1918 Oct 5 -6:00 Guat C%sT # Haiti -# From Gwillim Law (2005-04-15): -# Risto O. Nykanen wrote me that Haiti is now on DST. -# I searched for confirmation, and I found a -# <a href="http://www.haitianconsulate.org/time.doc"> press release -# on the Web page of the Haitian Consulate in Chicago (2005-03-31), -# </a>. Translated from French, it says: -# -# "The Prime Minister's Communication Office notifies the public in general -# and the press in particular that, following a decision of the Interior -# Ministry and the Territorial Collectivities [I suppose that means the -# provinces], Haiti will move to Eastern Daylight Time in the night from next -# Saturday the 2nd to Sunday the 3rd. -# -# "Consequently, the Prime Minister's Communication Office wishes to inform -# the population that the country's clocks will be set forward one hour -# starting at midnight. This provision will hold until the last Saturday in -# October 2005. -# -# "Port-au-Prince, March 31, 2005" - # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Haiti 1983 only - May 8 0:00 1:00 D Rule Haiti 1984 1987 - Apr lastSun 0:00 1:00 D @@ -2092,8 +1847,6 @@ Rule Haiti 1983 1987 - Oct lastSun 0:00 0 S # Shanks says AT is 2:00, but IATA SSIM (1991/1997) says 1:00s. Go with IATA. Rule Haiti 1988 1997 - Apr Sun>=1 1:00s 1:00 D Rule Haiti 1988 1997 - Oct lastSun 1:00s 0 S -Rule Haiti 2005 only - Apr Sun>=1 0:00 1:00 D -Rule Haiti 2005 only - Oct lastSun 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Port-au-Prince -4:49:20 - LMT 1890 -4:49 - PPMT 1917 Jan 24 12:00 # P-a-P MT @@ -2145,44 +1898,11 @@ Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Olveston # Nicaragua seems to be back at -6:00 but I have not been able to find when # they changed from -5:00. # -# From Steffen Thorsen (2005-04-12): -# I've got reports from 8 different people that Nicaragua just started -# DST on Sunday 2005-04-10, in order to save energy because of -# expensive petroleum. The exact end date for DST is not yet -# announced, only "September" but some sites also say "mid-September". -# Some background information is available on the President's official site: -# http://www.presidencia.gob.ni/Presidencia/Files_index/Secretaria/Notas%20de%20Prensa/Presidente/2005/ABRIL/Gobierno-de-nicaragua-adelanta-hora-oficial-06abril.htm -# The Decree, no 23-2005 is available here: -# http://www.presidencia.gob.ni/buscador_gaceta/BD/DECRETOS/2005/Decreto%2023-2005%20Se%20adelanta%20en%20una%20hora%20en%20todo%20el%20territorio%20nacional%20apartir%20de%20las%2024horas%20del%2009%20de%20Abril.pdf -# -# From Paul Eggert (2005-05-01): -# The decree doesn't say anything about daylight saving, but for now let's -# assume that it is daylight saving and that they'll switch back on the -# 3rd Sunday in September. -# -# From Gwillim Law (2005-04-21): -# The Associated Press story on the time change, which can be found at -# http://www.lapalmainteractivo.com/guias/content/gen/ap/America_Latina/AMC_GEN_NICARAGUA_HORA.html -# and elsewhere, says (fifth paragraph, translated from Spanish): "The last -# time that a change of clocks was applied to save energy was in the year 2000 -# during the Arnoldo Aleman administration."... -# The northamerica file says that Nicaragua has been on UTC-6 continuously -# since December 1998. I wasn't able to find any details of Nicaraguan time -# changes in 2000. Perhaps a note could be added to the northamerica file, to -# the effect that we have indirect evidence that DST was observed in 2000. -# -# From Jesper Norgaard Welen (2005-11-02): -# Nicaragua left DST the 2005-10-02 at 00:00 (local time). -# http://www.presidencia.gob.ni/presidencia/files_index/secretaria/comunicados/2005/septiembre/26septiembre-cambio-hora.htm -# (2005-09-26) -# # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Nic 1979 1980 - Mar Sun>=16 0:00 1:00 D Rule Nic 1979 1980 - Jun Mon>=23 0:00 0 S -Rule Nic 1992 only - Jan 1 4:00 1:00 D +Rule Nic 1992 only - Jan 1 4:00 1:00 D Rule Nic 1992 only - Sep 24 0:00 0 S -Rule Nic 2005 only - Apr 10 0:00 1:00 D -Rule Nic 2005 only - Oct 2 0:00 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Managua -5:45:08 - LMT 1890 -5:45:12 - MMT 1934 Jun 23 # Managua Mean Time? @@ -2190,7 +1910,7 @@ Zone America/Managua -5:45:08 - LMT 1890 -5:00 - EST 1975 Feb 16 -6:00 Nic C%sT 1993 Jan 1 4:00 -5:00 - EST 1998 Dec - -6:00 Nic C%sT + -6:00 - CST # Panama # Zone NAME GMTOFF RULES FORMAT [UNTIL] |