Current time in Tehran

Iran · UTC+3:30

--:----

Asia/Tehran

UTC offset

UTC+3:30

Daylight Saving

Yes — observed

Time zone ID

Asia/Tehran

Business hours

8:00 AM – 4:00 PM IRST (Saturday–Wednesday)

About Tehran's time zone

Tehran follows Iran Standard Time (IRST, UTC+3:30) in winter and Iran Daylight Time (IRDT, UTC+4:30) in summer — one of the few countries to observe daylight saving time with a 30-minute base offset. Iran's 3:30 offset places it halfway between the time zones of its neighbors Turkey (UTC+3) and Afghanistan (UTC+4:30). Tehran is 3.5 hours ahead of London in winter and 4.5 hours in summer.

Best time to call Tehran

Calling from	Recommended window
London	5:30 AM – 2:30 PM GMT
Dubai	7:30 AM – 4:30 PM GST
Istanbul	8:30 AM – 5:30 PM TRT
New York	12:30 AM – 9:30 AM ET

Did you know? Iran uses the Solar Hijri calendar (also called the Persian calendar) as its official calendar. Unlike the Gregorian calendar, the Persian year starts on Nowruz — the spring equinox, around March 20-21 — and has been in continuous use for over 2,500 years. The year 2024 CE corresponds to 1402-1403 SH in the Persian calendar. Official Iranian documents, newspapers, and government systems use this calendar.

Cities in the same time zone