Time in Alaska

Time zones

Alaska is covered by two time zones, as described below:

• Islands west of -169.5° (169°30'W) are in the Hawaii-Aleutian Time Zone (UTC−10:00, DST UTC−09:00). Daylight saving time (DST) is observed.
• The town of Hyder, because it essentially is a single town split by the US-Canada border, unofficially observes Pacific Time including DST (UTC−08:00, DST UTC−07:00) like its neighbor Stewart, British Columbia, with the exception of the U.S. Post Office (because it is a federal facility).
• The rest of the state is in the Alaska Time Zone and observes DST (UTC−09:00, DST UTC−08:00).

tz database

The tz database version 2024b contains seven time zones for Alaska for historical reasons. Only three (America/Adak, America/Anchorage, and America/Metlakatla) are currently necessary.

CC	Coordinates	TZ	Comments	UTC offset	UTC offset DST	Notes
US	+611305−1495401	America/Anchorage	Alaska (most areas)	−09:00	−08:00
US	+581807−1342511	America/Juneau	Alaska - Juneau area	−09:00	−08:00
US	+571035−1351807	America/Sitka	Alaska - Sitka area	−09:00	−08:00
US	+593249−1394338	America/Yakutat	Alaska - Yakutat	−09:00	−08:00
US	+643004−1652423	America/Nome	Alaska (west)	−09:00	−08:00
US	+515248−1763929	America/Adak	Alaska - western Aleutians	−10:00	−09:00
US	+550737−1313435	America/Metlakatla	Alaska - Annette Island	−09:00	−08:00