[tz] [PATCH] Replace some zones with links when that doesn't lose useful info.
Paul Eggert
eggert at cs.ucla.edu
Wed Jul 9 06:49:50 UTC 2014
This is like the 2013-09-02 change, but for the Pacific this time.
* antarctica (Antarctica/DumontDUrville):
* australasia (Pacific/Tahiti, Pacific/Saipan, Pacific/Majuro)
(Pacific/Chuuk, Pacific/Pohnpei, Pacific/Palau, Pacific/Funafuti)
(Pacific/Midway, Pacific/Wake, Pacific/Wallis):
Remove zone, replacing each with a link to a region that has had
the same UTC offset since 1970. This removes data that were
largely invented, either by us or almost surely by Shanks or his
sources.
* asia, australasia, northamerica: Create links accordingly.
* NEWS: Document this.
---
NEWS | 9 +++++++++
antarctica | 7 +------
asia | 3 +++
australasia | 53 +++++++++++++++++++----------------------------------
northamerica | 1 +
5 files changed, 33 insertions(+), 40 deletions(-)
diff --git a/NEWS b/NEWS
index 82c83c9..222f91e 100644
--- a/NEWS
+++ b/NEWS
@@ -58,6 +58,15 @@ Unreleased, experimental changes
UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl;
Treindl sent helpful translations of two papers by Guo Qingsheng.)
+ Some zones have been turned into links, when they differed from existing
+ zones only for older UTC offsets where the data were likely invented.
+ These changes affect UTC offsets in pre-1970 time stamps only. This is
+ similar to the change in release 2013e, except this time for the Pacific.
+ The affected zones are: Antarctica/DumontDUrville, Pacific/Chuuk,
+ Pacific/Funafuti, Pacific/Majuro, Pacific/Midway, Pacific/Palau,
+ Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti, Pacific/Wake, and
+ Pacific/Wallis.
+
Asia/Shanghai's pre-standard-time UT offset has been changed from
8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
transition to standard time has been changed from 1928 to 1901.
diff --git a/antarctica b/antarctica
index 9e9d118..16aedaa 100644
--- a/antarctica
+++ b/antarctica
@@ -180,15 +180,10 @@ Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français
# year-round base in the main continent
# Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11
# <http://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05)
+# See Pacific/Port_Moresby.
#
# Another base at Port-Martin, 50km east, began operation in 1947.
# It was destroyed by fire on 1952-01-14.
-#
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Antarctica/DumontDUrville 0 - zzz 1947
- 10:00 - PMT 1952 Jan 14 # Port-Martin Time
- 0 - zzz 1956 Nov
- 10:00 - DDUT # Dumont-d'Urville Time
# France & Italy - year-round base
# Concordia, -750600+1232000, since 2005
diff --git a/asia b/asia
index 4d9faeb..68994d5 100644
--- a/asia
+++ b/asia
@@ -1432,6 +1432,9 @@ Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u
9:00 Japan J%sT
# Since 1938, all Japanese possessions have been like Asia/Tokyo.
+# The following region has been like Asia/Tokyo since at least 1970.
+Link Asia/Tokyo Pacific/Palau
+
# Jordan
#
# From <http://star.arabia.com/990701/JO9.html>
diff --git a/australasia b/australasia
index 605d8dd..cd9c3e4 100644
--- a/australasia
+++ b/australasia
@@ -355,8 +355,7 @@ Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea
-9:00 - GAMT # Gambier Time
Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct
-9:30 - MART # Marquesas Time
-Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete
- -10:00 - TAHT # Tahiti Time
+# See Pacific/Honolulu for Tahiti.
# Clipperton (near North America) is administered from French Polynesia;
# it is uninhabited.
@@ -366,11 +365,16 @@ Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31
9:39:00 - LMT 1901 # Agana
10:00 - GST 2000 Dec 23 # Guam
10:00 - ChST # Chamorro Standard Time
+Link Pacific/Guam Pacific/Saipan # N Mariana Is
# Kiribati
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki
12:00 - GILT # Gilbert Is Time
+Link Pacific/Tarawa Pacific/Funafuti # Tuvalu
+Link Pacific/Tarawa Pacific/Majuro # Marshall Is (most locations)
+Link Pacific/Tarawa Pacific/Wake # in US minor outlying islands
+Link Pacific/Tarawa Pacific/Wallis # Wallis and Futuna
Zone Pacific/Enderbury -11:24:20 - LMT 1901
-12:00 - PHOT 1979 Oct # Phoenix Is Time
-11:00 - PHOT 1995
@@ -381,29 +385,20 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901
14:00 - LINT
# N Mariana Is
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31
- 9:43:00 - LMT 1901
- 9:00 - MPT 1969 Oct # N Mariana Is Time
- 10:00 - MPT 2000 Dec 23
- 10:00 - ChST # Chamorro Standard Time
+# See Pacific/Guam.
# Marshall Is
+# See Pacific/Tarawa for most locations.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Majuro 11:24:48 - LMT 1901
- 11:00 - MHT 1969 Oct # Marshall Islands Time
- 12:00 - MHT
Zone Pacific/Kwajalein 11:09:20 - LMT 1901
11:00 - MHT 1969 Oct
-12:00 - KWAT 1993 Aug 20 # Kwajalein Time
12:00 - MHT
# Micronesia
+# See Pacific/Guadalcanal for Pohnpei.
+# See Pacific/Port_Moresby for Chuuk.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Chuuk 10:07:08 - LMT 1901
- 10:00 - CHUT # Chuuk Time
-Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia
- 11:00 - PONT # Pohnpei Time
Zone Pacific/Kosrae 10:51:56 - LMT 1901
11:00 - KOST 1969 Oct # Kosrae Time
12:00 - KOST 1999
@@ -509,15 +504,15 @@ Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston
11:30 - NFT # Norfolk Time
# Palau (Belau)
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror
- 9:00 - PWT # Palau Time
+# See Asia/Tokyo.
# Papua New Guinea
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Port_Moresby 9:48:40 - LMT 1880
9:48:32 - PMMT 1895 # Port Moresby Mean Time
10:00 - PGT # Papua New Guinea Time
+Link Pacific/Port_Moresby Antarctica/DumontDUrville
+Link Pacific/Port_Moresby Pacific/Chuuk # in Micronesia
# Pitcairn
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
@@ -532,6 +527,7 @@ Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5
-11:00 - NST 1967 Apr # N=Nome
-11:00 - BST 1983 Nov 30 # B=Bering
-11:00 - SST # S=Samoa
+Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands
# Samoa (formerly and also known as Western Samoa)
@@ -619,6 +615,7 @@ Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara
11:00 - SBT # Solomon Is Time
+Link Pacific/Guadalcanal Pacific/Pohnpei # in Micronesia
# Tokelau Is
#
@@ -657,9 +654,7 @@ Zone Pacific/Tongatapu 12:19:20 - LMT 1901
13:00 Tonga TO%sT
# Tuvalu
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Funafuti 11:56:52 - LMT 1901
- 12:00 - TVT # Tuvalu Time
+# See Pacific/Tarawa.
# US minor outlying islands
@@ -724,21 +719,13 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901
# Fri. 6:30A Lv. HONOLOLU (Pearl Harbor), H.I. H.L.T. Ar. 5:30P Sun.
# " 3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A "
#
-Zone Pacific/Midway -11:49:28 - LMT 1901
- -11:00 - NST 1956 Jun 3
- -11:00 1:00 NDT 1956 Sep 2
- -11:00 - NST 1967 Apr # N=Nome
- -11:00 - BST 1983 Nov 30 # B=Bering
- -11:00 - SST # S=Samoa
+# See Pacific/Pago_Pago.
# Palmyra
# uninhabited since World War II; was probably like Pacific/Kiritimati
# Wake
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Wake 11:06:28 - LMT 1901
- 12:00 - WAKT # Wake Time
-
+# See Pacific/Tarawa.
# Vanuatu
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
@@ -753,9 +740,7 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila
11:00 Vanuatu VU%sT # Vanuatu Time
# Wallis and Futuna
-# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Pacific/Wallis 12:15:20 - LMT 1901
- 12:00 - WFT # Wallis & Futuna Time
+# See Pacific/Tarawa.
###############################################################################
diff --git a/northamerica b/northamerica
index 66f362b..842f6e4 100644
--- a/northamerica
+++ b/northamerica
@@ -592,6 +592,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 #Schmitt&Cox
-10:00 - HST
Link Pacific/Honolulu Pacific/Johnston
+Link Pacific/Honolulu Pacific/Tahiti # in French Polynesia
# Now we turn to US areas that have diverged from the consensus since 1970.
--
1.9.1
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