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HDT – Hawaii-Aleutian Daylight Time (Daylight Saving Time)

Time Zone names, codes and abbreviations for Standard Time and Daylight Saving Time (DST) around the world.

Also known as: HADT – Hawaii Daylight Time

North America: HADT is not observed in any location this year.

Please use the search field on the right to find the correct local time in any city.

Time zone map of HDT
No locations currently on HDT.
Areas with same time currently (UTC -9).
No locations are currently on HDT – Hawaii-Aleutian Daylight Time.
Currently has same time zone offset as HDT (UTC -9) but different time zone name.

Hawaii-Aleutian Daylight Time (HDT) is 9 hours behind Coordinated Universal Time (UTC). This time zone is a Daylight Saving Time time zone and is used in: North America.

See full time zone map

Winter Time & DST

This time zone is a daylight saving/summer time zone, in the winter some places will switch to the corresponding standard time zone: HST (Hawaii Standard Time).

Where and When is HDT Observed?

North America

U.S. states using HDT in the summer and HST in the winter:

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

Other Time Zones in UTC -9

Some time zones exist that have the same offset as HDT, but can be found under a different name: