Hawaii Standard Time – HST Time Zone - Time And Date

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Also known as: HAST – Hawaii-Aleutian Standard Time

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

Hawaii Standard Time (HST) is 10 hours behind Coordinated Universal Time (UTC). This time zone is in use during standard time in: North America, Pacific.

See full time zone map

Where and When is HST Observed?

North America

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

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

US states using HST all year:

  • Hawaii

Other Time Zones in UTC -10

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

  • CKT – Cook Island Time
  • TAHT – Tahiti Time
  • W – Whiskey Time Zone

Time zones by continent/region

  • Africa
  • Antarctica
  • Asia
  • Atlantic
  • Australia
  • Caribbean
  • Central America
  • Europe
  • Indian Ocean
  • Military
  • North America
  • Pacific
  • South America

See all Time zone abbreviations

Time zones Tools

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HST time now

8:24:09CH

thứ hai 15 Tháng mười hai 2025 p.

  • HST will be observed in Adak until 08 Tháng ba 2026 p. 2:00 SA
  • UTC Offset: UTC -10
  • 17 hours behind Ho Chi Minh
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Example cities

USA – Honolulu (All Year)USA – Adak (Winter)USA – Hilo (All Year)US Minor Outlying Islands – Palmyra Atoll (All Year)

Related time zones

HDT – Hawaii-Aleutian Daylight Time (Daylight Time)

Time Zone Map with DST

Time zone map

Time Zone Map

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