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Hawaii-Aleutian Daylight Time (HDT)

Also known as: Hawaii Daylight Time (HADT)

Map showing the areas covered by the timezone
  • Currently observing HDT
  • Areas with same time currently UTC -9
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Hawaii-Aleutian Daylight Time (HDT) is 9 hours behind Coordinated Universal Time (UTC). This time zone is in use during Daylight Saving Time in: North America.

See full time zone map

Where and When is HDT Observed?

North America

US states using HDT in the summer and HST in the winter

See all Time Zones in North America

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: