tzdata/backport-Yukon-s-change-is-effective-2020-11-01.patch
2020-10-10 19:03:29 +08:00

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From d3bdef36c2deaa1f781f6691f5995ff65899acd9 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Thu, 24 Sep 2020 15:52:20 -0700
Subject: [PATCH 36/47] =?UTF-8?q?Yukon=E2=80=99s=20change=20is=20effective?=
=?UTF-8?q?=202020-11-01.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
* NEWS: Mention this. (Thanks to Andrew G. Smith.)
* northamerica (America/Whitehorse, America/Dawson):
The rule change is Nov 1, not Mar 8 2:00.
---
NEWS | 13 +++++++++++++
northamerica | 16 ++++++++++++++--
2 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/NEWS b/NEWS
index 6b9fd43..517d1c8 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,10 @@ News for the tz database
Unreleased, experimental changes
+ Briefly:
+ Revised predictions for Morocco's changes starting in 20203.
+ Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08.
+
Changes to future timestamps
Morocco's spring-forward after Ramadan is now predicted to occur
@@ -9,6 +13,15 @@ Unreleased, experimental changes
(Thanks to Milamber.) The first altered prediction is for 2023,
now predicted to spring-forward on April 30 instead of April 23.
+ Changes to past and future time zone abbreviations and DST flags
+
+ Canada's Yukon, represented by America/Whitehorse and
+ America/Dawson, changes its time zone rules from -08/-07 to
+ permanent -07 on 2020-11-01, not on 2020-03-08 as 2020a had it.
+ This change affects only the time zone abbreviation (MST vs PDT)
+ and daylight saving flag for the period between the two dates.
+ (Thanks to Andrew G. Smith.)
+
Changes to past timestamps
Correct several transitions for Hungary for 1918/1983.
diff --git a/northamerica b/northamerica
index febf05b..1440c7a 100644
--- a/northamerica
+++ b/northamerica
@@ -2449,6 +2449,18 @@ Zone America/Creston -7:46:04 - LMT 1884
# consistency with nearby Dawson Creek, Creston, and Fort Nelson.
# https://yukon.ca/en/news/yukon-end-seasonal-time-change
+# From Andrew G. Smith (2020-09-24):
+# Yukon has completed its regulatory change to be on UTC -7 year-round....
+# http://www.gov.yk.ca/legislation/regs/oic2020_125.pdf
+# What we have done is re-defined Yukon Standard Time, as we are
+# authorized to do under section 33 of our Interpretation Act:
+# http://www.gov.yk.ca/legislation/acts/interpretation_c.pdf
+#
+# From Paul Eggert (2020-09-24):
+# tzdb uses the obsolete YST abbreviation for standard time in Yukon through
+# about 1970, and uses PST for standard time in Yukon since then. Consistent
+# with that, use MST for -07, the new standard time in Yukon effective Nov. 1.
+
# 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
@@ -2503,12 +2515,12 @@ Zone America/Inuvik 0 - -00 1953 # Inuvik founded
Zone America/Whitehorse -9:00:12 - LMT 1900 Aug 20
-9:00 NT_YK Y%sT 1967 May 28 0:00
-8:00 NT_YK P%sT 1980
- -8:00 Canada P%sT 2020 Mar 8 2:00
+ -8:00 Canada P%sT 2020 Nov 1
-7:00 - MST
Zone America/Dawson -9:17:40 - LMT 1900 Aug 20
-9:00 NT_YK Y%sT 1973 Oct 28 0:00
-8:00 NT_YK P%sT 1980
- -8:00 Canada P%sT 2020 Mar 8 2:00
+ -8:00 Canada P%sT 2020 Nov 1
-7:00 - MST
--
1.8.3.1