Current time in Arizona
- Time zone
- America/Phoenix
- UTC offset
- UTC-07:00
- Abbreviation
- MST
- Daylight saving time
- Not observed
- Country
- United States
- Also uses
- America/Denver — the Navajo Nation, which does observe DST
Arizona time difference
How far Arizona is ahead of or behind the world's main business hubs right now. Daylight saving time is already applied where it is in effect.
Clock changes in Arizona
Arizona does not change its clocks: UTC-07:00 applies all year.
Time zone history since 1970
No clock changes since at least 1970: Arizona has kept UTC-07:00 all year round.
Source: IANA time zone database, version 2025b.
Worth knowing
Arizona does not use daylight saving time: the state has stayed on Mountain Standard Time (UTC−7) all year since 1968. In summer that puts Arizona on the same clock as California, and in winter on the same clock as Colorado and New Mexico.
The exception is the Navajo Nation in the northeast of the state, which does change its clocks. The Hopi Reservation, surrounded by Navajo land, does not.
Sources: IANA tz database: northamerica · 49 CFR Part 71 (US time zone boundaries)
Frequently asked questions
- What time zone is Arizona in?
- Arizona uses the America/Phoenix (MST) time zone and is currently on UTC-07:00. Part of the state uses a different zone: America/Denver.
- Does Arizona observe daylight saving time?
- No. Arizona stays on UTC-07:00 all year.