CHST: Chamorro Standard Time
Guam & Northern Marianas
Monday, 28th September 2026
What CHST actually is
UTC+10, all year: a US time zone on the far side of the date line from the mainland.
Careful: Guam & Northern Marianas is not on CHST at the moment. It is currently ChST (UTC+10) because of daylight saving.
Daylight saving
Clocks here do not change: this zone stays on the same offset all year.
Convert CHST
Looking for UTC and GMT developer tooling (epoch conversion, ISO 8601, a free time API)? That lives on our sibling site utctime.app.
Other abbreviations
Questions people ask
What time is it in CHST right now?
7:13 am (07:13) on Monday, 28th September 2026, for Guam & Northern Marianas.
What does CHST stand for?
Chamorro Standard Time. UTC+10, all year: a US time zone on the far side of the date line from the mainland.
What is the UTC offset of CHST?
Guam & Northern Marianas: UTC+10.