Time now in Guam

UTC+10:00 • Pacific/Guam (ChST)

Your device clock is 719ms ahead of the detected local time (Pacific/Guam, UTC+10:00). Time reference obtained from NIST NTP servers with an accuracy of ±0.021 seconds.

20:17:53
Saturday, August 1, 2026, week 31

Time in Guam now

Guam has one official time zone: ChST (UTC+10:00).

Part of the territory observes daylight saving time (DST), which moves the clock forward one hour during part of the year.

Official time in Guam is defined by a single time zone.

What is the time zone in Guam?

Official time in Guam is defined by a single time zone (IANA zone). Below are the zone and its UTC offset.

Main time zones in Guam

Time zone Offset (UTC) Main cities
Pacific/Guam UTC+10:00 Dededo Village, Dededo, Yigo Village, Yigo, Tamuning

List of time zones used in Guam (IANA zones)

Zone Offset (UTC) Daylight saving
Pacific/Guam UTC+10:00 Yes

Time difference between Columbus, Ohio, United States and Guam

The time difference between Columbus, Ohio, United States and Guam depends on the region.

  • Dededo Village, Dededo: 14 hour(s) behind the time in Columbus, Ohio, United States

Does Guam use daylight saving time?

Yes. Part of Guam observes daylight saving time (DST). Start and end dates vary by zone.

Recent time changes in Guam

  • 2000-12-23 at 00:00 (local time) – return to standard time

The last time change in Guam was on 2000-12-23 at 00:00 (local time) (zone Pacific/Guam): clocks went back (fall, back to standard) — transition from GST to ChST.

Frequently asked questions

What time is it in Guam?
The country has several time zones. The current time depends on the region and varies between UTC+10:00 and UTC+10:00. The clock at the top of this page shows the time synchronized with official sources.
How many time zones does Guam have?
Guam has 1 main time zone(s). The IANA database lists specific zones used in different regions.
Does Guam use daylight saving time?
Yes. Most regions of Guam observe daylight saving time (DST). Clocks are typically set forward in March and back in November.

See also

How to convert Guam time

To convert Guam time to other countries:

  1. Identify the time zone of the city or region.
  2. Check whether daylight saving time (DST) is in effect.
  3. Compare with the UTC offset of your country.
Time now in locations in Guam with links for more information (25 locations)