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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

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:

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: