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.
Where and When is HST Observed?
North America
US states using HST in the winter and HDT in the summer:
US states using HST all year:
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: