Current Time in Tehran

About time in Tehran

Tehran runs on Iran Standard Time, abbreviated IRST, set at an unusual UTC+3:30 offset that includes an extra half hour. This thirty-minute offset places Tehran between the common whole-hour zones of its neighbors, a feature that often surprises travelers. For many years Iran shifted its clocks for daylight saving, but the country abolished the practice in 2022, so the offset now stays fixed all year. As a result, Tehran no longer springs forward or falls back, and IRST remains constant from January through December.

Tehran does not make seasonal clock changes under its current rules. Its offset is UTC+3:30 (no DST). The live clock above reads Tehran's local time directly from the IANA time zone database in your browser, using the rules installed on your device. Keep your browser updated when regional rules change. To plan a call or convert a specific moment, use the timezone converter or meeting planner linked below.

Daylight in Tehran through 2026

Tehran sits at about 35.7°N, 51.4°E. The longest day of 2026 is June 20, with 14h 35m between sunrise and sunset. The shortest is December 19, with 9h 44m, a difference of 4 h 51 min. At this mid-latitude, winter evenings are dark early and summer evenings stay light well after a normal working day.

The earliest sunrise of the year comes around June 6 (04:48) and the latest sunset around June 25 (19:24). These are not exactly on the solstice because the sun’s position runs slightly ahead of or behind clock time during the year.

Solar noon, when the sun is highest, falls at about 12:11 local time in late March, 12:06 in late June and 12:02 in late December. In standard time the sun is highest at about 12:04 on average, close to 12:00, so the clock and the sun are well aligned in Tehran.

Local clock times, including daylight saving where it applies. Calculated with the standard sunrise equation for the city centre; terrain and tall buildings can delay the visible sunrise.

Clock changes in Tehran (2026–2027)

Tehran keeps the same offset all year. No clock changes are scheduled in 2026 or 2027 under the time-zone rules used for this page. Its gap to cities that do observe daylight saving still changes when they move their clocks: in January Tehran is 3 hours 30 minutes ahead of London and 8 hours 30 minutes ahead of New York.

Dates come from the IANA time zone database as bundled with this site’s build. Governments occasionally change rules at short notice; see our methodology.