IRST to MST
Convert Iran Time — Tehran to Arizona Time — Phoenix (no DST) — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Tehran, it's 10:30 PM in Phoenix the previous day. Phoenix is 10½ hours behind Tehran. Use the converter above to turn any IRST time into MST, or scan the hour-by-hour table below for the full day.
IRST to MST at a glance
Planning a meeting between Tehran and Phoenix
Tehran and Phoenix share no standard 9-to-5 overlap, so a live call usually means one side taking an early-morning or late-evening slot. The hourly table below helps you pick the least-inconvenient time for everyone.
Hour-by-hour: Tehran to Phoenix
A full day mapped from IRST to MST.
Frequently asked
Is Phoenix ahead of or behind Tehran?
Phoenix is 10½ hours behind Tehran.
What is 12:00 PM IRST in MST?
12:00 PM in Tehran is 1:30 AM in Phoenix.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so IRST and MST automatically reflect the correct daylight-saving offset for the current date.