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HAST – Hawaii-Aleutian Standard Time (Standard Time)

Also known as: HST – Hawaii Standard Time

Time zone map of HAST
Currently observing HAST.
Areas with same time currently (UTC -10:00).
Currently observing HAST – Hawaii-Aleutian Standard Time.
Currently has same time zone offset as HAST (UTC -10:00) but different time zone name.

Hawaii-Aleutian Standard Time (HAST) is 10 hours behind Coordinated Universal Time (UTC). This time zone is a standard time zone and is used in: North America.

See full time zone map

Summer Time & DST

Some places observe daylight saving time/summer time during the summer, and therefore use HADT (Hawaii-Aleutian Daylight Time) in the summer.

Email time zone indicator: -1000

An email sent from someone in the Hawaii-Aleutian Standard Time (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 Hawaii-Aleutian Standard Time, as other time zones could have the same UTC offset).

Where and when is HAST observed?

North America

U.S. states using HAST in the winter and HADT in the summer

  • Alaska - Aleutian Islands west of 169.30 West (east of 169.30 West use AKST/AKDT)

U.S. states using HAST all year

  • Hawaii

HAST time now

7:08:45AM

Monday, December 22, 2014

  • UTC Offset: UTC -10:00
  • 5 hours behind Washington DC

Find current time and time zone by city


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Example cities

U.S.A. – Honolulu (All Year)
U.S.A. – Adak (Winter)

Related time zones

HADT – Hawaii-Aleutian Daylight Time (Daylight Time)


Time Zone Map with DST

Time Zone Map

Time Zone Map