Primary city
Hagåtña
US time zone
Chamorro Time
Guam and the Northern Mariana Islands use Chamorro Standard Time year-round (no DST).
ChST UTC+10 year-round No daylight saving Pacific/Guam
Standard offset
UTC+10
Daylight saving
No
IANA id
Pacific/Guam
Major cities
- Hagåtña , GU
- Saipan , MP
Related states & territories
Some states span multiple zones — these links cover places commonly associated with Chamorro Time.
Convert into Chamorro Time
Pick any city and local time — results highlight every U.S. zone, with Chamorro Time called out.
Converting 15:59 in Tokyo, JP (GMT+9) → all U.S. zones. Times use official IANA zones (DST applied automatically).
| U.S. zone | Local time | Date | Note |
|---|---|---|---|
| Eastern Time EST | 1:59 AM | Sun, Nov 1, 2026 | — |
| Central Time CDT | 1:59 AM | Sun, Nov 1, 2026 | — |
| Mountain Time MDT | 12:59 AM | Sun, Nov 1, 2026 | — |
| Pacific Time PDT | 11:59 PM | Sat, Oct 31, 2026 | previous day |
| Alaska Time AKDT | 10:59 PM | Sat, Oct 31, 2026 | previous day |
| Hawaii–Aleutian Time HST · no DST | 8:59 PM | Sat, Oct 31, 2026 | previous day |
| Arizona (Mountain Standard) MST · no DST | 11:59 PM | Sat, Oct 31, 2026 | previous day |
| Atlantic Time (Puerto Rico) AST · no DST | 2:59 AM | Sun, Nov 1, 2026 | — |
| Chamorro Time GMT+10 · no DST | 4:59 PM | Sun, Nov 1, 2026 | — |
| Samoa Standard Time GMT-11 · no DST | 7:59 PM | Sat, Oct 31, 2026 | previous day |
Live clocks refresh about every 30s (last tick 3:59 PM source-local). Prefer a city page? Browse the U.S. time zones list.