Clock changes worldwide › Guam

Does Guam have daylight saving time?

No. Guam does not change its clocks. It stays on ChST, UTC+10 all year.

Guam last used daylight saving time in 1977.

More: current time in Guam · every country's clock changes · time zone converter · daylight saving time explained

Questions people ask

Does Guam have daylight saving time?

No. Guam does not change its clocks. It stays on ChST, UTC+10 all year.

When did Guam last change its clocks?

Guam last used daylight saving time in 1977.

What time zone is Guam in?

Guam uses UTC+10. See the current time in Guam.

Source: IANA time zone database, version 2026e, the same data phones and computers use. History is shown from 1970, the period the database documents reliably.