[tz] Pakistan DST in 2002
Tim Parenti
tim at timtimeonline.com
Sat Jan 2 20:06:01 UTC 2016
On 1 Jan 2016 16:07, Matt Johnson wrote:
> While there are indeed areas where this certainly occurred,
> we should be careful not to introduce that artificially. If there is
> uncertainty between 0:00 and 0:01, we should assume 0:00 (IMHO).
Agreed. I took a look through and there thankfully weren't too many cases like this. In the attached patch 0001, I left the few cases where 00:01 is almost definitely correct, like the StJohns and Moncton rules; but removed the others. Feel free to apply it, or not, if people have strong feelings either way.
The attached patch 0002 just rearranges NEWS items a bit, to be more consistent with future / past-and-future / past.
--
Tim Parenti
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From ff0ff90148780703b7c8fd80924851ee610697c3 Mon Sep 17 00:00:00 2001
From: Tim Parenti <tim at timtimeonline.com>
Date: Sat, 2 Jan 2016 12:17:35 -0500
Subject: Remove 00:01 where likely spurious.
These transitions more likely occurred at 00:00, and any 00:01 appearing
in references was likely for the purposes of clarification only.
Suggested by Matt Johnson in
http://mm.icann.org/pipermail/tz/2016-January/023041.html
* africa (Africa/Algiers): Adjust introduction of Paris Mean Time on
1891-03-15.
* australasia (Aus): Adjust start time of daylight saving on 1917-01-01.
* europe (Europe/Athens): Adjust end time of Athens Mean Time on
1916-07-28.
(Europe/Paris): Adjust start and end times of Paris Mean Time on
1891-03-15 and 1911-03-11.
* northamerica (America/Phoenix): Adjust suspensions of observance of
War Time from 1944-01-01 to -04-01, and again from 1944-10-01.
* backzone (America/Dominica, America/Montserrat): Adjust introduction
of standard time on 1911-07-01.
* NEWS: Document this.
---
NEWS | 6 +++++-
africa | 2 +-
australasia | 2 +-
backzone | 4 ++--
europe | 6 +++---
northamerica | 6 +++---
6 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/NEWS b/NEWS
index b725168..1df1c06 100644
--- a/NEWS
+++ b/NEWS
@@ -15,7 +15,11 @@ Unreleased, experimental changes
2015-11-01 at 02:00. (Thanks to Steffen Thorsen.)
Asia/Karachi's two transition times in 2002 were off by a minute.
- (Thanks to Matt Johnson.)
+ (Thanks to Matt Johnson.) Several other occurrences of historical
+ 00:01 transitions have also been moved to 00:00 where they were likely
+ spurious. Affected zones include Africa/Algiers, America/Phoenix,
+ Europe/Athens, Europe/Paris, and most Australian zones, all for time
+ stamps before 1945. (Thanks to Tim Parenti.)
Time zone abbreviations for America/Cayman have been changed from
EST/EDT to CIST/CIDST, as per the 2015-11-25 daylight-saving bill.
diff --git a/africa b/africa
index f20d216..4aba312 100644
--- a/africa
+++ b/africa
@@ -92,7 +92,7 @@ Rule Algeria 1980 only - Oct 31 2:00 0 -
# Shanks & Pottenger give 0:09:20 for Paris Mean Time; go with Howse's
# more precise 0:09:21.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01
+Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15
0:09:21 - PMT 1911 Mar 11 # Paris Mean Time
0:00 Algeria WE%sT 1940 Feb 25 2:00
1:00 Algeria CE%sT 1946 Oct 7
diff --git a/australasia b/australasia
index 5c272db..f7d301e 100644
--- a/australasia
+++ b/australasia
@@ -12,7 +12,7 @@
# Please see the notes below for the controversy about "EST" versus "AEST" etc.
# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Aus 1917 only - Jan 1 0:01 1:00 D
+Rule Aus 1917 only - Jan 1 0:00 1:00 D
Rule Aus 1917 only - Mar 25 2:00 0 S
Rule Aus 1942 only - Jan 1 2:00 1:00 D
Rule Aus 1942 only - Mar 29 2:00 0 S
diff --git a/backzone b/backzone
index b4ca342..0727ea3 100644
--- a/backzone
+++ b/backzone
@@ -285,7 +285,7 @@ Zone America/Coral_Harbour -5:32:40 - LMT 1884
-5:00 - EST
# Dominica
-Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 0:01 # Roseau
+Zone America/Dominica -4:05:36 - LMT 1911 Jul 1 # Roseau
-4:00 - AST
# Baja California
@@ -350,7 +350,7 @@ Zone America/Montreal -4:54:16 - LMT 1884
# From Paul Eggert (2006-03-22):
# In 1995 volcanic eruptions forced evacuation of Plymouth, the capital.
# world.gazetteer.com says Cork Hill is the most populous location now.
-Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 0:01 # Cork Hill
+Zone America/Montserrat -4:08:52 - LMT 1911 Jul 1 # Cork Hill
-4:00 - AST
# Argentina
diff --git a/europe b/europe
index 6eea558..12627b2 100644
--- a/europe
+++ b/europe
@@ -1230,8 +1230,8 @@ Rule France 1976 only - Sep 26 1:00 0 -
# Go with Howse. Howse writes that the time in France was officially based
# on PMT-0:09:21 until 1978-08-09, when the time base finally switched to UTC.
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
-Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15 0:01
- 0:09:21 - PMT 1911 Mar 11 0:01 # Paris MT
+Zone Europe/Paris 0:09:21 - LMT 1891 Mar 15
+ 0:09:21 - PMT 1911 Mar 11 # Paris MT
# Shanks & Pottenger give 1940 Jun 14 0:00; go with Excoffier and Le Corre.
0:00 France WE%sT 1940 Jun 14 23:00
# Le Corre says Paris stuck with occupied-France time after the liberation;
@@ -1338,7 +1338,7 @@ Rule Greece 1980 only - Apr 1 0:00 1:00 S
Rule Greece 1980 only - Sep 28 0:00 0 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone Europe/Athens 1:34:52 - LMT 1895 Sep 14
- 1:34:52 - AMT 1916 Jul 28 0:01 # Athens MT
+ 1:34:52 - AMT 1916 Jul 28 # Athens MT
2:00 Greece EE%sT 1941 Apr 30
1:00 Greece CE%sT 1944 Apr 4
2:00 Greece EE%sT 1981
diff --git a/northamerica b/northamerica
index ca8bf29..a82760b 100644
--- a/northamerica
+++ b/northamerica
@@ -652,9 +652,9 @@ Link Pacific/Honolulu Pacific/Johnston
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
Zone America/Phoenix -7:28:18 - LMT 1883 Nov 18 11:31:42
- -7:00 US M%sT 1944 Jan 1 0:01
- -7:00 - MST 1944 Apr 1 0:01
- -7:00 US M%sT 1944 Oct 1 0:01
+ -7:00 US M%sT 1944 Jan 1
+ -7:00 - MST 1944 Apr 1
+ -7:00 US M%sT 1944 Oct 1
-7:00 - MST 1967
-7:00 US M%sT 1968 Mar 21
-7:00 - MST
--
2.6.2
-------------- next part --------------
From e18735c9c4fedf060a2ece677d603501bcb8f741 Mon Sep 17 00:00:00 2001
From: Tim Parenti <tim at timtimeonline.com>
Date: Sat, 2 Jan 2016 15:02:54 -0500
Subject: * NEWS: Reorganize.
---
NEWS | 26 ++++++++++++++------------
1 file changed, 14 insertions(+), 12 deletions(-)
diff --git a/NEWS b/NEWS
index 1df1c06..3bc1b91 100644
--- a/NEWS
+++ b/NEWS
@@ -2,17 +2,28 @@ News for the tz database
Unreleased, experimental changes
- Changes affecting past and future time stamps
+ Changes affecting future time stamps
Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
(Thanks to Alexander Krivenyshev.)
+ Asia/Tehran now has DST predictions for the year 2038 and later,
+ to be March 21 00:00 to September 21 00:00. This is likely better
+ than predicting no DST, albeit off by a day every now and then.
+
+ Changes affecting past and future time stamps
+
+ America/Metlakatla switched from PST all year to AKST/AKDT on
+ 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.)
+
+ Time zone abbreviations for America/Cayman have been changed from
+ EST/EDT to CIST/CIDST, as per the 2015-11-25 daylight-saving bill.
+
America/Santa_Isabel has been removed, and replaced with a
backward compatibility link to America/Tijuana. Its contents were
apparently based on a misreading of Mexican legislation.
- America/Metlakatla switched from PST all year to AKST/AKDT on
- 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.)
+ Changes affecting past time stamps
Asia/Karachi's two transition times in 2002 were off by a minute.
(Thanks to Matt Johnson.) Several other occurrences of historical
@@ -21,15 +32,6 @@ Unreleased, experimental changes
Europe/Athens, Europe/Paris, and most Australian zones, all for time
stamps before 1945. (Thanks to Tim Parenti.)
- Time zone abbreviations for America/Cayman have been changed from
- EST/EDT to CIST/CIDST, as per the 2015-11-25 daylight-saving bill.
-
- Changes affecting future time stamps
-
- Asia/Tehran now has DST predictions for the year 2038 and later,
- to be March 21 00:00 to September 21 00:00. This is likely better
- than predicting no DST, albeit off by a day every now and then.
-
Changes affecting build procedure
An installer can now combine leap seconds with use of the backzone file,
--
2.6.2
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