Guam · ChST
Tue, 15 Sept 2026
Timezone Guide
Hagåtña, Guam runs on UTC+10. This time zone stays fixed year-round at UTC+10 — daylight saving time is not observed. There is a 14-hour difference between Hagåtña and New York. Standard working hours don't overlap at all with New York, so meetings need an early or late slot on one side. There is a 9-hour difference between Hagåtña and London. Standard working hours don't overlap at all with London, so meetings need an early or late slot on one side. There is a 1-hour difference between Hagåtña and Tokyo. Standard 9-to-6 working hours overlap for about 8 hours a day with Tokyo. A good time to connect: 10:00–18:00 in Hagåtña lines up with 09:00–17:00 in Tokyo. This timezone is also shared with cities such as Sydney, Melbourne, Brisbane. Keeping these offsets in mind makes it easier to schedule calls or travel to and from Hagåtña.
Practical Info
Hagåtña (Guam) is home to roughly 140K people. Today brings about 12.8 hours of daylight: sunrise at 06:00, sunset at 18:48. This time zone stays fixed year-round at UTC+10 — daylight saving time is not observed. It sits in the Northern Hemisphere, about 13° north of the equator. Traffic drives on the right.
Capital
Hagåtña 👑
Continent
Oceania
Time Zone
ChST · Pacific/Guam
Coordinates
13.48°N, 144.75°E
Currency
USD ($)
Calling Code
+1
Driving Side
Right
Hemisphere
Northern
Language
English, Chamorro
Measurement System
Metric
Did You Know?
Guam markets itself as where America's day begins, sitting at UTC+10 on the far side of the date line from the mainland — about 15 hours ahead of New York. It is a US territory whose residents are citizens but cannot vote for president.
The clock: Hagåtña keeps UTC+10 with no daylight saving, so the gap to the US mainland shifts by an hour twice a year without Guam doing anything.
Annual Daylight
Working Hours
2h overlap