HDT – Hawaii-Aleutian Daylight Time (Time Zone Abbreviation)

Also known as: HADT – Hawaii Daylight Time

No locations currently on HDT. Would you like to see HST?

North America: HDT is currently not observed because locations are on standard time and are observing HST.

Time zone map of HDT — No locations currently on HDT.
Observes HDT part of the year.
Areas with same time currently (UTC -9).
No locations are currently on HDT – Hawaii-Aleutian Daylight Time.
Observes HDT – Hawaii-Aleutian Daylight Time part of the year, but not currently.
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:

AKST – Alaska Standard Time
GAMT – Gambier Time
V – Victor Time Zone

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