Simplify Ukraine metadata

This does not change timestamps; it merely simplifies the source.
Suggested by Michael Deckers in:
https://mm.icann.org/pipermail/tz/2022-February/031186.html
* europe (Ukraine): Remove Rule, as C-Eur suffices.
(Europe/Simferopol, Europe/Kiev, Europe/Uzhgorod, Europe/Zaporozhye):
Use C-Eur instead of Ukraine.

1 files changed, 25 insertions, 31 deletions

diff --git a/europe b/europe
index b0f3ef3..1be796f 100644
--- a/europe
+++ b/europe
@@ -692,33 +692,6 @@ Rule	Russia	1985	2010	-	Mar	lastSun	 2:00s	1:00	S
 Rule	Russia	1996	2010	-	Oct	lastSun	 2:00s	0	-
 # As described below, Russia's 2014 change affects Zone data, not Rule data.
 
-# Daylight saving time for Ukraine, 1992/1996
-#
-# From Alois Triendl (2014-03-01):
-# REGULATION A N O V A on March 20, 1992 N 139 ...  means that from
-# 1992 on, Ukraine had DST with begin time at 02:00 am, on last Sunday
-# in March, and end time 03:00 am, last Sunday in September....
-# CABINET OF MINISTERS OF UKRAINE RESOLUTION on May 13, 1996 N 509
-# "On the order of computation time on the territory of Ukraine" ....
-# As this cabinet decision is from May 1996, it seems likely that the
-# transition in March 1996, which predates it, was still at 2:00 am
-# and not at 3:00 as would have been under EU rules.
-# This is why I have set the change to EU rules into May 1996,
-# so that the change in March is stil covered by the Ukraine rule.
-# The next change in October 1996 happened under EU rules....
-# TZ database holds three other zones for Ukraine.... I have not yet
-# worked out the consequences for these three zones, as we (me and my
-# US colleague David Cochrane) are still trying to get more
-# information upon these local deviations from Kiev rules.
-#
-# From Paul Eggert (2022-02-08):
-# For now, assume that Ukraine's other three zones followed the same rules,
-# except that Crimea switched to Moscow time in 1994 as described elsewhere.
-#
-# Rule	NAME	FROM	TO	-	IN	ON	AT	SAVE	LETTER/S
-Rule	Ukraine	1992	1996	-	Mar	LastSun	2:00	1:00	S
-Rule	Ukraine	1992	1995	-	Sep	lastSun	3:00	0	-
-
 # From Stepan Golosunov (2016-03-07):
 # Wikipedia and other sources refer to the Act of the Council of
 # Ministers of the USSR from 1988-01-04 No. 5 and the Act of the
@@ -2870,7 +2843,7 @@ Zone Europe/Simferopol	 2:16:24 -	LMT	1880
 # sometime between the 1994 DST switches.  Shanks & Pottenger simply say
 # 1994-09-25 03:00, but that can't be right.  For now, guess it
 # changed in May.
-			 2:00	Ukraine	EE%sT	1994 May
+			 2:00	C-Eur	EE%sT	1994 May
 # From IATA SSIM (1994/1997), which also says that Kerch is still like Kiev.
 			 3:00	E-Eur	MSK/MSD	1996 Mar 31  0:00s
 			 3:00	1:00	MSD	1996 Oct 27  3:00s
@@ -4037,6 +4010,27 @@ Link	Europe/Istanbul	Asia/Istanbul	# Istanbul is in both continents.
 
 # Ukraine
 #
+# From Alois Triendl (2014-03-01):
+# REGULATION A N O V A on March 20, 1992 N 139 ...  means that from
+# 1992 on, Ukraine had DST with begin time at 02:00 am, on last Sunday
+# in March, and end time 03:00 am, last Sunday in September....
+# CABINET OF MINISTERS OF UKRAINE RESOLUTION on May 13, 1996 N 509
+# "On the order of computation time on the territory of Ukraine" ....
+# As this cabinet decision is from May 1996, it seems likely that the
+# transition in March 1996, which predates it, was still at 2:00 am
+# and not at 3:00 as would have been under EU rules.
+# This is why I have set the change to EU rules into May 1996,
+# so that the change in March is stil covered by the Ukraine rule.
+# The next change in October 1996 happened under EU rules....
+# TZ database holds three other zones for Ukraine.... I have not yet
+# worked out the consequences for these three zones, as we (me and my
+# US colleague David Cochrane) are still trying to get more
+# information upon these local deviations from Kiev rules.
+#
+# From Paul Eggert (2022-02-08):
+# For now, assume that Ukraine's other three zones followed the same rules,
+# except that Crimea switched to Moscow time in 1994 as described elsewhere.
+
 # From Igor Karpov, who works for the Ukrainian Ministry of Justice,
 # via Garrett Wollman (2003-01-27):
 # BTW, I've found the official document on this matter. It's government
@@ -4126,7 +4120,7 @@ Zone Europe/Kiev	2:02:04 -	LMT	1880
 			1:00	C-Eur	CE%sT	1943 Nov  6
 			3:00	Russia	MSK/MSD	1990 Jul  1  2:00
 			2:00	1:00	EEST	1991 Sep 29  3:00
-			2:00	Ukraine	EE%sT	1996 May 13
+			2:00	C-Eur	EE%sT	1996 May 13
 			2:00	EU	EE%sT
 # Transcarpathia used CET 1990/1991.
 # "Uzhhorod" is the transliteration of the Rusyn/Ukrainian pronunciation, but
@@ -4140,7 +4134,7 @@ Zone Europe/Uzhgorod	1:29:12 -	LMT	1890 Oct
 			3:00	-	MSK	1990 Jul  1  2:00
 			1:00	-	CET	1991 Mar 31  3:00
 			2:00	-	EET	1992 Mar 20
-			2:00	Ukraine	EE%sT	1996 May 13
+			2:00	C-Eur	EE%sT	1996 May 13
 			2:00	EU	EE%sT
 # Zaporozh'ye and eastern Lugansk oblasts observed DST 1990/1991.
 # "Zaporizhia" is the transliteration of the Ukrainian name, but
@@ -4154,7 +4148,7 @@ Zone Europe/Zaporozhye	2:20:40 -	LMT	1880
 			1:00	C-Eur	CE%sT	1943 Oct 25
 			3:00	Russia	MSK/MSD	1991 Mar 31  2:00
 			2:00	E-Eur	EE%sT	1992 Mar 20
-			2:00	Ukraine	EE%sT	1996 May 13
+			2:00	C-Eur	EE%sT	1996 May 13
 			2:00	EU	EE%sT
 
 # Vatican City