Daylight saving time in Guam

Guam does not observe daylight saving time. Clocks in Guam remain on their standard offset year-round.

Guam does not change its clocks — it does not observe daylight saving time.

The primary IANA identifier for Guam is Pacific/Guam. Operating systems and APIs use this identifier to compute the correct local time.

Clocks in Guam do not change — there is no daylight saving time.

Guam does not observe daylight saving time. Countries that skip DST typically cite simpler scheduling, proximity to the equator, or public preference.

All DST transition dates come from the IANA Time Zone Database (tzdata), which is the authoritative source used by operating systems worldwide. Dates refresh on every IANA release.