Oceania · Micronesia · Dependency
Current time in Guam
A single time zone at UTC+10:00.
Sunday, May 31, 2026
About Guam's time
A single time zone.
Guam's time is set as Chamorro Standard Time (ChST) at UTC+10:00, with no daylight saving time changes throughout the year, keeping things simple and consistent on the island.
Major cities
Cities of Guam.
History
How Guam keeps time.
Guam adopted Chamorro Standard Time (ChST) at UTC+10:00, becoming its official time zone. This adjustment aligned Guam more closely with neighboring regions and provided consistency for travel and communication across Micronesia, standardizing the island's timekeeping with regional partners.
Frequently asked questions
Common questions about Guam's time zone, daylight saving rules, and how to handle it in software. Can't find what you need? Email [email protected].
- What is the time zone in Guam?
- Guam uses Chamorro Standard Time (ChST), which is UTC+10:00.
- Does Guam observe daylight saving time?
- No, Guam does not observe daylight saving time; the time remains consistent throughout the year.
- What is the official abbreviation for Guam's time zone?
- The official abbreviation for Guam's time zone is ChST, which stands for Chamorro Standard Time.
- Is Guam's time consistent with its neighboring regions?
- Yes, by using Chamorro Standard Time, Guam’s time is aligned with neighboring regions in Micronesia, making travel and communication simpler.
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