python · github-actions · Mar 2, 2026
diff --git a/NEWS.md b/NEWS.md
@@ -1,3 +1,27 @@
+# Version 2026.1
+Upstream version 2026a released 2026-03-02T06:59:49+00:00
+
+## Briefly:
+
+Moldova has used EU transition times since 2022. The "right" TZif files are no
+longer installed by default. -DTZ_RUNTIME_LEAPS=0 disables runtime support for
+leap seconds. TZif files are no longer limited to 50 bytes of abbreviations. zic
+is no longer limited to 50 leap seconds. Several integer overflow bugs have been
+fixed.
+
+## Changes to past and future timestamps
+
+Since 2022 Moldova has observed EU transition times, that is, it has sprung
+forward at 03:00, not 02:00, and has fallen back at 04:00, not 03:00.  (Thanks
+to Heitor David Pinto.)
+
+## Changes to data
+
+Remove Europe/Chisinau from zonenow.tab, as it now agrees with Europe/Athens for
+future timestamps.
+
+---
+
 # Version 2025.3
 Upstream version 2025c released 2025-12-10T22:42:37+00:00
 

diff --git a/VERSION b/VERSION
@@ -1 +1 @@
-2025.3
+2026.1rc0
diff --git a/news.d/2026a.md b/news.d/2026a.md
@@ -0,0 +1,21 @@
+# Version 2026.1
+Upstream version 2026a released 2026-03-02T06:59:49+00:00
+
+## Briefly:
+
+Moldova has used EU transition times since 2022. The "right" TZif files are no
+longer installed by default. -DTZ_RUNTIME_LEAPS=0 disables runtime support for
+leap seconds. TZif files are no longer limited to 50 bytes of abbreviations. zic
+is no longer limited to 50 leap seconds. Several integer overflow bugs have been
+fixed.
+
+## Changes to past and future timestamps
+
+Since 2022 Moldova has observed EU transition times, that is, it has sprung
+forward at 03:00, not 02:00, and has fallen back at 04:00, not 03:00.  (Thanks
+to Heitor David Pinto.)
+
+## Changes to data
+
+Remove Europe/Chisinau from zonenow.tab, as it now agrees with Europe/Athens for
+future timestamps.
diff --git a/src/tzdata/__init__.py b/src/tzdata/__init__.py
@@ -1,6 +1,6 @@
 # IANA versions like 2020a are not valid PEP 440 identifiers; the recommended
 # way to translate the version is to use YYYY.n where `n` is a 0-based index.
-__version__ = "2025.3"
+__version__ = "2026.1rc0"
 
 # This exposes the original IANA version number.
-IANA_VERSION = "2025c"
+IANA_VERSION = "2026a"
diff --git a/src/tzdata/zoneinfo/Asia/Tbilisi b/src/tzdata/zoneinfo/Asia/Tbilisi
diff --git a/src/tzdata/zoneinfo/Europe/Chisinau b/src/tzdata/zoneinfo/Europe/Chisinau
diff --git a/src/tzdata/zoneinfo/Europe/Tiraspol b/src/tzdata/zoneinfo/Europe/Tiraspol
diff --git a/src/tzdata/zoneinfo/leapseconds b/src/tzdata/zoneinfo/leapseconds
@@ -70,7 +70,7 @@ Leap	2016	Dec	31	23:59:60	+	S
 # Any additional leap seconds will come after this.
 # This Expires line is commented out for now,
 # so that pre-2020a zic implementations do not reject this file.
-#Expires 2026	Jun	28	00:00:00
+#Expires 2026	Dec	28	00:00:00
 
 # Here are POSIX timestamps for the data in this file.
 # "#updated" gives the last time the leap seconds data changed
@@ -79,8 +79,8 @@ Leap	2016	Dec	31	23:59:60	+	S
 # "#expires" gives the first time this file might be wrong;
 # if this file was derived from the IERS leap-seconds.list,
 # this is typically a bit less than one year after "updated".
-#updated 1751846400 (2025-07-07 00:00:00 UTC)
-#expires 1782604800 (2026-06-28 00:00:00 UTC)
+#updated 1767698058 (2026-01-06 11:14:18 UTC)
+#expires 1798416000 (2026-12-28 00:00:00 UTC)
 
 #	Updated through IERS Bulletin C (https://hpiers.obspm.fr/iers/bul/bulc/bulletinc.dat)
-#	File expires on 28 June 2026
+#	File expires on 28 December 2026
diff --git a/src/tzdata/zoneinfo/tzdata.zi b/src/tzdata/zoneinfo/tzdata.zi
@@ -1,4 +1,5 @@
-# version 2025c
+# version 2026a
+# redo posix_only
 # This zic input file is in the public domain.
 R d 1916 o - Jun 14 23s 1 S
 R d 1916 1919 - O Su>=1 23s 0 -
@@ -1304,8 +1305,8 @@ R MT 1974 o - S 16 0s 0 -
 R MT 1975 1979 - Ap Su>=15 2 1 S
 R MT 1975 1980 - S Su>=15 2 0 -
 R MT 1980 o - Mar 31 2 1 S
-R MD 1997 ma - Mar lastSu 2 1 S
-R MD 1997 ma - O lastSu 3 0 -
+R MD 1997 2021 - Mar lastSu 2 1 S
+R MD 1997 2021 - O lastSu 3 0 -
 R O 1918 1919 - S 16 2s 0 -
 R O 1919 o - Ap 15 2s 1 S
 R O 1944 o - Ap 3 2s 1 S
@@ -3666,7 +3667,8 @@ Z Europe/Chisinau 1:55:20 - LMT 1880
 3 R MSK/MSD 1990 May 6 2
 2 R EE%sT 1992
 2 e EE%sT 1997
-2 MD EE%sT
+2 MD EE%sT 2022
+2 E EE%sT
 Z Europe/Dublin -0:25:21 - LMT 1880 Au 2
 -0:25:21 - DMT 1916 May 21 2s
 -0:25:21 1 IST 1916 O 1 2s

diff --git a/src/tzdata/zoneinfo/zonenow.tab b/src/tzdata/zoneinfo/zonenow.tab
@@ -166,9 +166,6 @@ XX	+3003+03115	Africa/Cairo	Egypt
 # +02/+03 - EET/EEST (Lebanon DST)
 XX	+3353+03530	Asia/Beirut	Lebanon
 #
-# +02/+03 - EET/EEST (Moldova DST)
-XX	+4700+02850	Europe/Chisinau	Moldova
-#
 # +02/+03 - EET/EEST (Palestine DST)
 XX	+3130+03428	Asia/Gaza	Palestine
 #