Chamorro Standard Time (ChST)
Chamorro Standard Time (ChST) is UTC+10. It is used in Guam and the Northern Mariana Islands and does not change for daylight saving time.
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· ChST
Pacific/Guam · UTC+10
Convert ChST
Where ChST is used
Guam and the Northern Mariana Islands.
Countries on the same offsets
ChST and daylight saving time
Chamorro Standard Time does not change for daylight saving time. It stays on UTC+10 every day of the year.
ChST FAQ
What is ChST?
Chamorro Standard Time (ChST) is UTC+10. It is used in Guam and the Northern Mariana Islands and does not change for daylight saving time.
What is the current ChST time?
ChST is UTC+10. The live clock on this page shows the current Chamorro Standard Time time, updated every second.
Which countries use ChST?
ChST is used in Guam and the Northern Mariana Islands.
Updated 7 November 2026. Time zone data: IANA tz database.