What time is it in Guam?

Guam stays on UTC+10:00 all year. Its offset from UTC never moves, so its relationship to places that do change shifts twice a year instead — which is usually why someone checks. Right now it is 10 hours ahead of UTC, and 15 hours ahead of New York.

Guam is 15 hours ahead of New York and 18 hours ahead of Los Angeles. 9am in New York is 12:00 am the next day in Guam.

To convert a specific time rather than read the current one, the converter shows both directions with the next clock change for each.

The day is 11 hours 32 minutes long in Guam, and losing 1 minute a day. The sun peaks within a few minutes of twelve o’clock, so Guam’s offset fits its longitude about as closely as a whole-hour offset can.

Guam lies inside the tropics, so the sun passes directly overhead at noon twice a year — around April 26 and August 17 in 2026, when a vertical object casts almost no shadow. Nowhere outside the tropics ever sees that. The longest day is 12 hours 55 minutes and the shortest 11 hours 20 minutes, 95 minutes apart.

Guam has kept UTC+10:00 since Sunday, August 28, 1977, when it moved from UTC+11:00. Before that its clocks read 1 hour ahead of what they read now.

On UTC+10:00 right now, the same clock as Guam: