What is Hawaii-Aleutian Standard Time?
You need to keep in mind that this time zone is an identifier for a time offset that is 10 hours behind the
UTC time zone.
This time pattern is maintained using highly accurate atomic clocks matched to the Earth's rotation.
In this section, you will learn key facts about this time zone and stay well informed.
The IANA time zone identifier used is Etc/GMT+10.
Please be aware that
Daylight Saving Time (DST) is not used in this time zone.
Without DST clocks do not change in this time zone, keeping the same UTC offset throughout the year.
About This Time Pattern
Hawaii-Aleutian Time Zone Map
This time zone is a time offset that subtracts 10 hours from
Coordinated Universal Time (UTC).
In the map above we highlight the entire region covered by this time zone.
Its main cities and territories are:
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Honolulu HI
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Hilo (Hawaii, USA)
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Kahului (Hawaii, USA)
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Kailua-Kona (Hawaii, USA)
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Kapaa (Hawaii, USA)
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Adak Island (Alaska, USA)
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Johnston Atoll (USA)
Hawaii has not observed daylight saving time since September 1945.
In the map above we highlight the entire region covered by the time zone.
The Honolulu Metropolitan Area is the largest metropolitan area in the zone.
This time offset is also observed during standard time and daylight saving time for various geographic regions.
You need to be very careful finding these time zones that may have different names and abbreviations, but have the same UTC offset:
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Cook Island Time (CKT)
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Samoa Daylight Time (SDT)
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Tahiti Time (TAHT)
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Whiskey Time Zone (W)
Main Countries
This time zone is used in the following country:
In the USA, this time zone is present in the state of
Hawaii.
The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich Observatory.
Current Hawaii-Aleutian Standard Time with seconds according to the official atomic clock.
