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File _service:tar_scm:backport-Much-of-Greenland-still-uses-DST-from-2024-on.patch of Package tzdata (Revision 47f364b24d453e686812f34643ffc6af)

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From 6438e996dc99cd5988b1ddd6dc3f95dfd1919caf Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 2 Dec 2022 13:26:46 -0800
Subject: [PATCH] Much of Greenland still uses DST from 2024 on

Reference: https://github.com/eggert/tz/commit/bb7bfd2dd475402b79a87263ee89aa78c4af7c60
Conflict: remove NEWS;

(Thanks to Thomas M. Steenholdt.)
* NEWS: Mention this.
* europe (America/Nuuk): Instead of switching from -03/-02 to
permanent -02 in March 2023, switch from -03/-02 to -02/-01
in October 2023.
---
 europe | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/europe b/europe
index 122a0b5..7f00931 100644
--- a/europe
+++ b/europe
@@ -1170,19 +1170,18 @@ Zone Atlantic/Faroe	-0:27:04 -	LMT	1908 Jan 11 # Tórshavn
 #
 # From Jürgen Appel (2022-11-25):
 # https://ina.gl/samlinger/oversigt-over-samlinger/samling/dagsordener/dagsorden.aspx?lang=da&day=24-11-2022
-# If I understand this correctly, from the next planned switch to
-# summer time, Greenland will permanently stay at that time, i.e. no
-# switch back to winter time in 2023 will occur.
-#
-# From Paul Eggert (2022-11-28):
-# The official document in Danish
-# https://naalakkersuisut.gl/-/media/naalakkersuisut/filer/kundgoerelser/2022/11/2511/31_da_inatsisartutlov-om-tidens-bestemmelse.pdf?la=da&hash=A33597D8A38CC7038465241119EF34F3
-# says standard time for Greenland is -02, that Naalakkersuisut can lay down
-# rules for DST and can require some areas to use a different time zone,
-# and that this all takes effect 2023-03-25 22:00.  The abovementioned
-# "bekymringer" URL says the intent is no transition March 25, that
-# Greenland will not go back to winter time in fall 2023, and that
-# only America/Nuuk is affected (though further changes may occur).
+#
+# From Thomas M. Steenholdt (2022-12-02):
+# - The bill to move America/Nuuk from UTC-03 to UTC-02 passed.
+# - The bill to stop observing DST did not (Greenland will stop observing DST
+#   when EU does).
+# Details on the implementation are here (section 6):
+# https://ina.gl/dvd/EM%202022/pdf/media/2553529/pkt17_em2022_tidens_bestemmelse_bem_da.pdf
+# This is how the change will be implemented:
+# 1. The shift *to* DST in 2023 happens as normal.
+# 2. The shift *from* DST in 2023 happens as normal, but coincides with the
+#    shift to UTC-02 normaltime (people will not change their clocks here).
+# 3. After this, DST is still observed, but as -02/-01 instead of -03/-02.
 
 # Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
 Rule	Thule	1991	1992	-	Mar	lastSun	2:00	1:00	D
@@ -1206,8 +1205,8 @@ Zone America/Scoresbysund -1:27:52 -	LMT	1916 Jul 28 # Ittoqqortoormiit
 			-1:00	EU	-01/+00
 Zone America/Nuuk	-3:26:56 -	LMT	1916 Jul 28 # Godthåb
 			-3:00	-	-03	1980 Apr  6  2:00
-			-3:00	EU	-03/-02	2023 Mar 25 22:00
-			-2:00	-	-02
+			-3:00	EU	-03/-02	2023 Oct 29  1:00u
+			-2:00	EU	-02/-01
 Zone America/Thule	-4:35:08 -	LMT	1916 Jul 28 # Pituffik
 			-4:00	Thule	A%sT
 
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