Time Zone Database Release 2025b
Released
Downloads
| File | Description |
|---|---|
 tzdb-2025b.tar.lz (537.0kb) |
Complete Distribution (Data, Code and Extras) |
| tzdata2025b.tar.gz (453.4kb) |
Data Only Distribution |
| tzcode2025b.tar.gz (302.2kb) |
Code Only Distribution |
Release Notes
Briefly:
New zone for Aysén Region in Chile which moves from -04/-03 to -03.
Changes to future timestamps
Chile's Aysén Region moves from -04/-03 to -03 year-round, joining
Magallanes Region. The region will not change its clocks on
2025-04-05 at 24:00, diverging from America/Santiago and creating a
new zone America/Coyhaique. (Thanks to Yonathan Dossow.) Model
this as a change to standard offset effective 2025-03-20.
Changes to past timestamps
Iran switched from +04 to +0330 on 1978-11-10 at 24:00, not at
year end. (Thanks to Roozbeh Pournader.)
Changes to code
'zic -l TIMEZONE -d . -l /some/other/file/system' no longer
attempts to create an incorrect symlink, and no longer has a
read buffer underflow. (Problem reported by Evgeniy Gorbanev.)