Phoenix is on the same time as Window Rock in winter and 1 hour behind in summer. Updated for the 2026 time zone changes and current daylight saving rules.
| Starting | Phoenix is | Window Rock / Phoenix |
|---|---|---|
| Nov 1, 2026 | same time | UTC−7 / UTC−7 |
| Mar 14, 2027 Window Rock springs forward | 1 hour behind | UTC−6 / UTC−7 |
| Nov 7, 2027 Window Rock falls back | same time | UTC−7 / UTC−7 |
Mountain Time. UTC−7 in winter and UTC−6 from the second Sunday in March to the first Sunday in November.
Mountain Standard Time. UTC−7 all year. Arizona doesn't use daylight saving time.
Winter: A 9-to-5 workday overlaps for the full 8 hours: 9:00 AM to 5:00 PM in Window Rock, which is 9:00 AM to 5:00 PM in Phoenix.
Summer: A 9-to-5 workday overlaps for 7 hours: 10:00 AM to 5:00 PM in Window Rock, which is 9:00 AM to 4:00 PM in Phoenix.
Arizona skips daylight saving time, but the Navajo Nation, including Window Rock, doesn't. It follows Mountain Time with daylight saving, so in summer it's an hour ahead of Phoenix.
Arizona doesn't use daylight saving time, so Phoenix stays at UTC−7 all year. It matches Los Angeles in summer and Denver in winter.
Phoenix is on the same time as Window Rock in winter and 1 hour behind in summer.
Window Rock uses Mountain Time: UTC−7 in winter and UTC−6 from the second Sunday in March to the first Sunday in November. Phoenix uses Mountain Standard Time: UTC−7 all year. Arizona doesn't use daylight saving time.
In winter: A 9-to-5 workday overlaps for the full 8 hours: 9:00 AM to 5:00 PM in Window Rock, which is 9:00 AM to 5:00 PM in Phoenix. In summer: A 9-to-5 workday overlaps for 7 hours: 10:00 AM to 5:00 PM in Window Rock, which is 9:00 AM to 4:00 PM in Phoenix.
Arizona skips daylight saving time, but the Navajo Nation, including Window Rock, doesn't. It follows Mountain Time with daylight saving, so in summer it's an hour ahead of Phoenix.
Arizona doesn't use daylight saving time, so Phoenix stays at UTC−7 all year. It matches Los Angeles in summer and Denver in winter.