Current time in Phoenix

United States · UTC-7

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America/Phoenix

UTC offset

UTC-7

Daylight Saving

No — not observed

Time zone ID

America/Phoenix

Business hours

8:00 AM – 5:00 PM MST (Monday–Friday)

About Phoenix's time zone

Phoenix follows Mountain Standard Time (MST, UTC-7) year-round, making it unique among major US cities for not observing daylight saving time. Arizona (except the Navajo Nation within Arizona) remains on UTC-7 permanently. This means Phoenix shares Mountain Standard Time with Denver in winter but shares Pacific Daylight Time with Los Angeles in summer. Phoenix's decision to skip DST was made in 1968, primarily because in Arizona's intense heat, longer daylight evenings mean higher air conditioning costs.

Best time to call Phoenix

Calling from	Recommended window
New York	10:00 AM – 7:00 PM ET
London	3:00 PM – 12:00 AM GMT
Los Angeles	8:00 AM – 5:00 PM PT (same time in summer)
Chicago	9:00 AM – 6:00 PM CT

Did you know? Arizona's refusal to observe DST creates a uniquely confusing situation: the Navajo Nation — which covers a large portion of northern Arizona — does observe DST (to stay synchronized with its territory in Utah, Colorado, and New Mexico). But the Hopi Reservation, which is entirely surrounded by the Navajo Nation within Arizona, does not observe DST. This creates a 'time zone donut hole' where you can change time zones four times driving across a small area of northeastern Arizona.

Cities in the same time zone