Check the current local time in Phoenix, United States. Phoenix uses the America/Phoenix time zone, with MST (UTC -7:00) during standard time.
MST
UTC -7:00
Used outside daylight saving time
Not Observed
Year-round standard time
No DST change
Standard time year-round
No seasonal offset changes
North America runs five continental-US timezones (Eastern, Central, Mountain, Pacific, Alaskan) plus Newfoundland (a 30-minute offset from Atlantic Time — one of the few 30-minute timezones outside Asia). DST is nearly universal (except Arizona, Hawaii, most of Saskatchewan) and runs March → November. Business scheduling defaults to Eastern for multi-office US corporations regardless of headquarters.
Phoenix operates on MST — Mountain Standard Time (UTC −7:00) year-round. Arizona is unique among the contiguous US states in that it does not observe daylight saving time — Phoenix clocks stay permanently fixed at UTC −7:00. The only exception within Arizona is the Navajo Nation, which does observe DST. This means Phoenix's offset relative to other US cities changes by one hour depending on whether those cities are in their standard or daylight time periods.
During US winter (when other states are in standard time), Phoenix is aligned with Mountain Standard Time alongside Denver and Salt Lake City. During US summer (when most states spring forward), Phoenix remains at UTC −7:00 while the Mountain region moves to MDT (UTC −6:00) — making Phoenix temporarily aligned with Pacific Daylight Time (PDT), also UTC −7:00. This creates the unusual situation where Los Angeles and Phoenix are on the same clock for roughly half the year.
Why no DST in Arizona? Arizona opted out of daylight saving time partly due to its desert climate — extending daylight into the evening during the intense summer heat was seen as a burden rather than a benefit. By staying on MST year-round, Arizona avoids adding an extra hour of peak summer heat to the end of the working day.
Phoenix is the fifth-largest city in the US and a major hub for semiconductor manufacturing (TSMC, Intel), finance, and real estate. The Phoenix metropolitan area (Maricopa County) is one of the fastest-growing large metros in the US, with a business community that regularly schedules calls across the US time zone spectrum from EST to PST.
Phoenix business hours run 8:00 AM to 5:00 PM MST (UTC −7:00), Monday to Friday, year-round with no DST shifts.
These cities share the same time zone as Phoenix — when it's 11:26:01 PM here, it's the same local time there.
Major cities in United States — some may be in a different time zone than Phoenix if the country spans multiple zones.
Find the perfect overlap time between your timezone and Phoenix. Our calculator shows when business hours align.
Calculate Best Calling TimeEverything you need to know about Phoenix time
