The metadata compiled herewithin is secondary to the tz repository
and is derived from the archives of the tz discussion list
as well as commits to the tz development repository.
Metadata is limited to changes affecting UTC offsets
for current and/or future timestamps
at the time that notice is sent.
Pull requests will NOT be accepted for a given timezone change until
it has been proposed to the tz mailing list at tz@iana.org,
discussed as necessary,
been committed to the tz development repository,
and (in general) released.
| Country/Region | Affected Zones | Description | Earliest effective date for UTC offset changes | Initial notice sent to tz discussion list |
Commits to development repository | tz release announced |
Notes | |
|---|---|---|---|---|---|---|---|---|
| GL | 🇬🇱 Greenland | America/Nuuk | Greenland, after holding clocks steady on 2023-10-28, will still spring ahead and continue to use DST from 2024-03-30 onward. | Leadtime: 484d, 8.0h |
Leadtime: 484d, 3.6h |
2023a Leadtime: 374d, 1.4h |
||
| MX | 🇲🇽 Mexico | America/Ciudad_Juarez, America/Ojinaga | The northern edge of Chihuahua resumes US DST rules. New zone America/Ciudad_Juarez for the western half, which rejoins -07 from 2022-11-30. | Leadtime: 2d, 9.9h |
Leadtime: 0d, 13.2h |
2022g Leadtime: 0d, 12.3h |
||
| GL | 🇬🇱 Greenland | America/Nuuk | Much of Greenland stops switching clocks after 2023-03-25 and advances to year-round -02. | Leadtime: 337d, 15.1h |
Leadtime: 333d, 22.7h |
2022g Leadtime: 333d, 7.3h |
It was later clarified that this change represented the combined effect of two proposed bills, one to advance standard time (which passed into law) and one to stop observing DST (which did not). The end result is no clock change on 2023-10-28, flanked by forward transitions on 2023-03-25 (to -02) and 2024-03-30 (to -01). This change was later released in 2023a. | |
| MX | 🇲🇽 Mexico | America/Bahia_Banderas, America/Mazatlan, America/Merida, America/Mexico_City, America/Monterrey | Most of Mexico, excluding areas near the US border, will stop observing DST after falling back on 2022-10-30. | Leadtime: 155d, 9.1h |
Leadtime: 155d, 7.0h |
2022f Leadtime: 155d, 6.1h |
||
| MX | 🇲🇽 Mexico | America/Chihuahua, America/Ojinaga | All of Chihuahua, including areas near the US border, moves to year-round -06 by not falling back on 2022-10-30 or 2022-11-06. | Leadtime: 1d, 9.1h |
Leadtime: 1d, 7.0h |
2022f Leadtime: 1d, 6.1h |
||
| FJ | 🇫🇯 Fiji | Pacific/Fiji | Fiji again suspends DST for the 2022/2023 season and will not spring forward on 2022-11-13 at 02:00. Assume DST is suspended indefinitely. | Leadtime: 16d, 6.3h |
Leadtime: 15d, 21.1h |
2022f Leadtime: 14d, 12.1h |
||
| JO | 🇯🇴 Jordan | Asia/Amman | Jordan advances to year-round +03 by not falling back on 2022-10-28. | Leadtime: 22d, 11.4h |
Leadtime: 21d, 20.1h |
2022e Leadtime: 16d, 0.2h |
||
| SY | 🇸🇾 Syrian Arab Republic | Asia/Damascus | Syria advances to year-round +03 by not falling back on 2022-10-28. | Leadtime: 22d, 11.9h |
Leadtime: 21d, 20.7h |
2022e Leadtime: 16d, 0.2h |
||
| PS | 🇵🇸 Palestine, State of | Asia/Gaza, Asia/Hebron | Palestine's DST transitions are now at 02:00 on the Saturday before the final Sunday in March and October. | Leadtime: 58d, 15.4h |
Leadtime: 57d, 0.0h |
2022d Leadtime: 33d, 15.4h |
||
| CL | 🇨🇱 Chile | America/Santiago, Pacific/Easter | Chile's DST is delayed by a week from 2022-09-04 to 2022-09-11. | Leadtime: 25d, 14.7h |
Leadtime: 25d, 14.0h |
2022b Leadtime: 24d, 3.4h |
||
| IR | 🇮🇷 Iran (Islamic Republic of) | Asia/Tehran | Iran will stop observing DST in 2023 by last falling back on 2022-09-21 at 24:00. | Leadtime: 315d, 2.6h |
Leadtime: 314d, 21.8h |
2022b Leadtime: 222d, 19.9h |
||
| PS | 🇵🇸 Palestine, State of | Asia/Gaza, Asia/Hebron | Palestine springs forward a day later, on 2022-03-27 at 00:00. | Leadtime: 15d, 9.2h |
Leadtime: 15d, 2.6h |
2022a Leadtime: 8d, 19.0h |
||