It is 10:35 on Saturday, October 3, 2026 in Guam, Guam. The city runs on UTC+10 (ChST), which puts it 13 hours ahead of Brasília.
Time zone and UTC offset in Guam
Guam follows the Pacific/Guam time zone, abbreviated ChST. Right now its offset from Coordinated Universal Time is UTC+10.
Guam does not observe daylight saving time and no clock change is scheduled for the next year. Its offset stays at UTC+10 all year round. Brazil abolished daylight saving time in 2019, so the gap between the two stays fixed at 13 hours. That makes scheduling predictable: a meeting booked for any date of the year at a given Brasília time always lands at the same local time in Guam.
Time difference between Brasília and Guam
To convert, take Brasília time and add 13 hours; when the sum passes midnight, the date in Guam is already the next day. The table uses today's offsets.
Going the other way, local noon in Guam is 23:00 (previous day) in Brasília, and local midnight is 11:00 (previous day) in Brasília. Because Guam is ahead, its calendar date is one day later than in Brasília from 11:00 until midnight Brasília time. Keep this in mind for deadlines, flights and anything scheduled around the start or end of a day.
| Brasília (UTC-3) | Guam (UTC+10) |
|---|---|
| 06:00 | 19:00 |
| 09:00 | 22:00 |
| 12:00 | 01:00 (next day) |
| 15:00 | 04:00 (next day) |
| 18:00 | 07:00 (next day) |
| 21:00 | 10:00 (next day) |
Best time to call Guam from Brazil
With a difference of 13 hours, the 9:00 to 18:00 working days do not overlap at all. The least inconvenient slot is around 18:00 in Brasília, which is 07:00 (next day) in Guam: one side will be early or late, so agree in writing who takes the awkward hour. Messages and recorded updates work better than live calls here.
For several cities at once, use the meeting planner, or convert any hour with the time zone converter.
Sunrise and sunset in Guam today
Today the Sun rises in Guam at 06:10 and sets at 18:09 local time, a daylight span of 11h 59min, with solar noon at 12:10. See other places on the sunrise and sunset page.
Where is Guam?
Guam is at 13.47° N, 144.75° E (country: Guam). Compare more places on world time or in the list of cities.