Time in Arizona

Time in Arizona
Time zone
  Mountain Time Zone
UTC offset
MSTUTC−07:00
MDTUTC−06:00
Current time
17:32, 12 September 2026 MST [refresh]
18:32, 12 September 2026 MDT [refresh]
Observance of DST
DST is observed in some of this time zone.
Arizona highway sign with notice for travelers about local time standard.

Time in Arizona, as in all U.S. states, is regulated by the United States Department of Transportation as well as by state and tribal law.

Most of Arizona is in the Mountain Time Zone and observes Mountain Time. Since 1968, most of the state—except the Navajo Nation—does not observe daylight saving time and remains on Mountain Standard Time (MST) all year. This results in most of Arizona having the same time as neighboring California and Nevada (outside of selected Nevada municipalities that officially or informally observe Mountain Time) each year from March to November, when locations in the Pacific Time Zone observe daylight saving time. From November to March, clocks across the state match those in neighboring Utah and New Mexico.