Arizona uses Mountain Standard Time (UTC-7). The state does not observe daylight saving time and stays on standard time year-round.
| State | Arizona (AZ) |
| Time Zone | Mountain Standard Time |
| IANA ID | America/Phoenix |
| Current Offset | UTC-7 |
| Abbreviation | MST |
| DST | Not observed in this state |
Arizona does not observe daylight saving time (except the Navajo Nation). The state stays on MST (UTC-7) year-round.