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US time zone

Arizona (Mountain Standard)

Most of Arizona stays on Mountain Standard Time year-round and does not observe daylight saving. The Navajo Nation does observe DST.

MST UTC−7 year-round No daylight saving America/Phoenix
Primary city
Phoenix
Standard offset
UTC−7
Daylight saving
No
IANA id
America/Phoenix

Major cities

  • Phoenix , AZ
  • Tucson , AZ

Related states & territories

Some states span multiple zones — these links cover places commonly associated with Arizona Time.

Convert into Arizona Time

Pick any city and local time — results highlight every U.S. zone, with Arizona (Mountain Standard) called out.

Converting 16:00 in Tokyo, JP (GMT+9) → all U.S. zones. Times use official IANA zones (DST applied automatically).

U.S. zoneLocal timeDateNote
Eastern Time
EST
2:00 AMSun, Nov 1, 2026—
Central Time
CST
1:00 AMSun, Nov 1, 2026—
Mountain Time
MDT
1:00 AMSun, Nov 1, 2026—
Pacific Time
PDT
12:00 AMSun, Nov 1, 2026—
Alaska Time
AKDT
11:00 PMSat, Oct 31, 2026previous day
Hawaii–Aleutian Time
HST · no DST
9:00 PMSat, Oct 31, 2026previous day
Arizona (Mountain Standard)
MST · no DST
12:00 AMSun, Nov 1, 2026—
Atlantic Time (Puerto Rico)
AST · no DST
3:00 AMSun, Nov 1, 2026—
Chamorro Time
GMT+10 · no DST
5:00 PMSun, Nov 1, 2026—
Samoa Standard Time
GMT-11 · no DST
8:00 PMSat, Oct 31, 2026previous day

Live clocks refresh about every 30s (last tick 4:00 PM source-local). Prefer a city page? Browse the U.S. time zones list.

Other U.S. time zones