HAST – Hawaii-Aleutian Standard Time
North American time zones:
Time zone offset: UTC - 10 hours
HAST is 10 hours behind of Coordinated Universal Time (UTC)
Note that some places observe daylight saving time/summer time during summer, and are therefore using HADT instead in the summer. See below for details.
Time zone abbreviations: HAST, HST
Full name is Hawaii-Aleutian Standard Time
HST – Hawaii Standard Time (Alternative)
Email time zone indicator: -1000
An email sent from someone in the HAST time zone will have the time zone listed as "-1000" in the headers of the email. (However, "-1000" does not have to be in HAST, as other time zones could have the same UTC offset).
Where and when is HAST observed?
HAST is used during winter in this US state (HADT during summer)
* Alaska - Aleutian Islands west of 169.30 West (east of 169.30 West use AKST/AKDT)
HAST is used all year in this US state
* Hawaii
Example locations in HAST
* Honolulu - all year
* Adak - during winter |
