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 | |
|---|---|---|---|---|---|---|---|---|
| ST | 🇸🇹 Sao Tome and Principe | Africa/Sao_Tome | São Tomé and PrÃncipe switches from +01 to +00 on 2019-01-01 at 02:00. | Leadtime: 2d, 4.5h |
Leadtime: 1d, 18.4h |
2018i Leadtime: 0d, 23.1h |
||
| KZ | 🇰🇿 Kazakhstan | Asia/Qostanay, Asia/Qyzylorda | Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21 at 00:00. New zone Asia/Qostanay because Qostanay, Kazakhstan didn't move. | Leadtime: 0d, 0.7h |
Leadtime: −0d, 1.7h |
2018h Leadtime: −9d, 5.1h |
||
| US | 🇺🇸 United States of America | America/Metlakatla | Metlakatla, Alaska will only observe year-round -08 for the winter of 2018/2019, returning to Alaska Time with DST by not changing clocks on 2019-03-10 either. | Leadtime: 321d, 8.5h |
Leadtime: 321d, 8.5h |
2018h Leadtime: 308d, 10.9h |
||
| US | 🇺🇸 United States of America | America/Metlakatla | Metlakatla, Alaska did not change clocks on 2018-11-04 at 02:00 and will observe year-round -08. | Leadtime: −2d, 15.8h |
Leadtime: −2d, 18.7h |
2018h Leadtime: −55d, 13.1h |
||
| MA | 🇲🇦 Morocco | Africa/Casablanca, Africa/El_Aaiun | Morocco switches to permanent +01 by not falling back on 2018-10-28. | Leadtime: 1d, 15.0h |
Leadtime: 1d, 8.7h |
2018g Leadtime: 0d, 10.1h |
||
| BR | 🇧🇷 Brazil | America/Sao_Paulo, America/Campo_Grande, America/Cuiaba | Brazil canceled its 2018-11 change to DST transition, and will begin DST as scheduled on 2018-11-04 at 00:00. | Leadtime: 19d, 2.6h |
Leadtime: 19d, 2.1h |
2018f Leadtime: 16d, 19.0h |
||
| BR | 🇧🇷 Brazil | America/Sao_Paulo, America/Campo_Grande, America/Cuiaba | Southern Brazil starts DST two weeks later in 2018, on 2018-11-18 at 00:00. | Leadtime: 30d, 15.2h |
Leadtime: 30d, 11.6h |
2018f Leadtime: 16d, 19.0h |
This change was canceled before it could be released. | |
| RU | 🇷🇺 Russian Federation | Europe/Volgograd | Volgograd moves from +03 to +04 on 2018-10-28 at 02:00. | Leadtime: 37d, 10.9h |
Leadtime: 28d, 13.8h |
2018f Leadtime: 9d, 15.0h |
||
| CL | 🇨🇱 Chile | America/Santiago, Pacific/Easter | Most of Chile changes DST dates, effective 2019-04-07 at 03:00 UTC. | Leadtime: 236d, 13.0h |
Leadtime: 236d, 11.8h |
2018f Leadtime: 170d, 19.0h |
||
| FJ | 🇫🇯 Fiji | Pacific/Fiji | Fiji ends DST 2019-01-13 at 03:00, not 2019-01-20. | Leadtime: 183d, 11.0h |
Leadtime: 183d, 9.5h |
2018f Leadtime: 86d, 6.0h |
||
| KP | 🇰🇵 Korea (Democratic People's Republic of) | Asia/Pyongyang | North Korea switches back to +09 on 2018-05-05 at 00:00. | Leadtime: 5d, 13.2h |
Leadtime: 4d, 13.0h |
2018e Leadtime: 0d, 15.1h |
After release, it was later determined that this change actually took place on 2018-05-04 at 23:30, which was updated in 2018f. | |
| PS | 🇵🇸 Palestine, State of | Asia/Gaza, Asia/Hebron | Palestine starts DST a week earlier in 2018, on 2018-03-24 at 01:00. | Leadtime: 7d, 5.2h |
Leadtime: 7d, 4.4h |
2018d Leadtime: 0d, 0.8h |
||
| AQ | 🇦🇶 Antarctica | Antarctica/Casey | Casey Station in Antarctica changed from +11 to +08 on 2018-03-11 at 04:00. | Leadtime: −4d, 5.4h |
Leadtime: −4d, 5.8h |
2018d Leadtime: −13d, 5.2h |
||
| ST | 🇸🇹 Sao Tome and Principe | Africa/Sao_Tome | São Tomé and PrÃncipe switched from +00 to +01 on 2018-01-01 at 01:00. | Leadtime: −7d, 11.1h |
Leadtime: −7d, 23.2h |
2018c Leadtime: −22d, 20.8h |
This change was tagged earlier in 2018a and 2018b, which were never officially released. | |