Also known as: HAST – Hawaii-Aleutian Standard Time
North America: Most locations are on HST, but a few locations are still observing HDT.
Currently observing HST.
Observes HST part of the year.
Areas with same time currently (UTC -10).
Observes HST part of the year.
Areas with same time currently (UTC -10).
Currently observing HST – Hawaii Standard Time.
Observes HST – Hawaii Standard Time part of the year, but not currently.
Currently has same time zone offset as HST (UTC -10) but different time zone name.
Observes HST – Hawaii Standard Time part of the year, but not currently.
Currently has same time zone offset as HST (UTC -10) but different time zone name.
Hawaii Standard Time (HST) is 10 hours behind Coordinated Universal Time (UTC). This time zone is in use during standard time in: North America, Pacific.
See full time zone map
Where and When is HST Observed?
North America
US states using HST in the winter and HDT in the summer:
- Alaska - Aleutian Islands west of 169.30 West (east of 169.30 West use AKST/AKDT)
US states using HST all year:
- Hawaii
Other Time Zones in UTC -10
Some time zones exist that have the same offset as HST, but can be found under a different name:
- CKT – Cook Island Time
- TAHT – Tahiti Time
- W – Whiskey Time Zone
Time zones by continent/region
- Africa
- Antarctica
- Asia
- Atlantic
- Australia
- Caribbean
- Central America
- Europe
- Indian Ocean
- Military
- North America
- Pacific
- South America
See all Time zone abbreviations
Time zones Tools
- Time Zone Converter
- International Meeting Planner
- Event Time Announcer
- Time Zone Abbreviations
- Time Zone News
- Daylight Saving Time
- Time Changes Worldwide
- Time Difference
HST time now
00:00:00
Showing 24 hour format.
UTC – Coordinated
Universal Time is the common time standard across the world.
Time Zones Map
