Tags · python/tzdata

2026.2

Update tzdata to version '2026b' (#135)

# Version 2026.2
Upstream version 2026b released 2026-04-23T06:06:43+00:00

## Briefly:

British Columbia moved to permanent -07 on 2026-03-09. Some more overflow bugs
have been fixed in zic.

## Changes to future timestamps

British Columbia’s 2026-03-08 spring forward was its last foreseeable clock
change, as it moved to permanent -07 thereafter. (Thanks to Arthur David Olson.)
Although the change to permanent -07 legally took place on 2026-03-09,
temporarily model the change to occur on 2026-11-01 at 02:00 instead.  This
works around a limitation in CLDR v48.2 (2026-03-17).  This temporary hack is
planned to be removed after CLDR is fixed.

Apr 24, 2026
1ed8943
zip
tar.gz
Notes

2026.2rc0

Update database to tzdata 2025b

Apr 24, 2026
52d84d7
zip
tar.gz

2026.1

Update tzdata to version '2026a' (#123)

# 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.

Co-authored-by: Stan Ulbrych <stan@python.org>