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Hawaii Time Zone

Hawaii Time Zone -- Chart and information included below.
The Hawaii-Aleutian Time Zone observes Hawaii-Aleutian Standard Time (HST), by subtracting ten hours from Coordinated Universal Time (UTC-10). The clock time in this zone is based on the mean solar time of the 150th degree meridian west of the Greenwich Observatory.

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Hawaii has a time zone all of its own. It is known as Hawaii Standard Time (HST). The west coast of the US mainland is two hours ahead of Hawaii. The time difference then increases by one hour for each move east into a new time zone.

The remainder of the United States puts its clocks ahead for summer daylight saving. Hawaii does not do this. Therefore, some of the time differences will increase by one hour when the respective countries have switched to daylight saving time. This time frame is generally March or April through to the month of October.

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