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 | |
|---|---|---|---|---|---|---|---|---|
| BR | 🇧🇷 Brazil | America/Sao_Paulo, America/Campo_Grande, America/Cuiaba | Brazil delays DST start by two weeks or so, to 2018-11-04 at 00:00. | Leadtime: 306d, 16.6h |
Leadtime: 305d, 7.1h |
2018c Leadtime: 270d, 5.2h |
This change was tagged earlier in 2018a and 2018b, which were never officially released. | |
| TO | 🇹🇴 Tonga | Pacific/Tongatapu | Tonga likely switches from +13/+14 to +13 by not adjusting its clocks on 2017-11-05 at 02:00. | Leadtime: 17d, 3.4h |
Leadtime: 16d, 18.7h |
2017c Leadtime: 11d, 21.0h |
It was not known at the time whether Tonga would observe DST. | |
| CY | 🇨🇾 Cyprus | Asia/Famagusta | Northern Cyprus switches from +03 to +02/+03 on 2017-10-29 at 04:00. | Leadtime: 10d, 16.2h |
Leadtime: 10d, 16.2h |
2017c Leadtime: 5d, 9.0h |
||
| SD | 🇸🇩 Sudan | Africa/Khartoum | Sudan switches from +03 to +02 on 2017-11-01. | Leadtime: 14d, 20.4h |
Leadtime: 13d, 13.3h |
2017c Leadtime: 8d, 5.0h |
||
| FJ | 🇫🇯 Fiji | Pacific/Fiji | Fiji ends DST on 2018-01-14 at 03:00, not 2018-01-21. | Leadtime: 145d, 14.5h |
Leadtime: 145d, 4.7h |
2017c Leadtime: 81d, 22.0h |
||
| NA | 🇳🇦 Namibia | Africa/Windhoek | Namibia switches from +01/+02 to +02 on 2017-09-03 at 02:00, affecting UT offsets from 2018-04-01 at 02:00. | Leadtime: 234d, 11.2h |
Leadtime: 233d, 23.8h |
2017c Leadtime: 159d, 8.0h |
||
| TC | 🇹🇨 Turks and Caicos Islands | America/Grand_Turk | Turks & Caicos switches from -04 to -05/-04 on 2018-03-11 at 03:00, affecting UT offsets from 2018-11-04 at 02:00. | Leadtime: 469d, 4.8h |
Leadtime: 434d, 22.1h |
2017c Leadtime: 376d, 14.0h |
||
| HT | 🇭🇹 Haiti | America/Port-au-Prince | Haiti resumed observance of DST on 2017-03-12 at 02:00. | Leadtime: −0d, 7.9h |
Leadtime: −0d, 12.2h |
2017b Leadtime: −11d, 0.2h |
||
| MN | 🇲🇳 Mongolia | Asia/Hovd, Asia/Ulaanbaatar, Asia/Choibalsan | Mongolia no longer observes DST, affecting UT offsets from 2017-03-25 at 02:00. | Leadtime: 44d, 0.3h |
Leadtime: 44d, 0.3h |
2017a Leadtime: 23d, 19.0h |
||