It is 04:04 on Saturday, October 3, 2026 in Tehran, Iran. The city runs on UTC+3:30, which puts it 6 hours 30 minutes ahead of Brasília.
Time zone and UTC offset in Tehran
Tehran follows the Asia/Tehran time zone (this zone has no widely used letter abbreviation). Right now its offset from Coordinated Universal Time is UTC+3:30. Note the 30-minute fraction: unlike most of the world, this zone is not set on a whole hour, so the difference from Brasília is not a round number of hours either.
Tehran does not observe daylight saving time and no clock change is scheduled for the next year. Its offset stays at UTC+3:30 all year round. Brazil abolished daylight saving time in 2019, so the gap between the two stays fixed at 6 hours 30 minutes. That makes scheduling predictable: a meeting booked for any date of the year at a given Brasília time always lands at the same local time in Tehran.
Time difference between Brasília and Tehran
To convert, take Brasília time and add 6 hours 30 minutes; when the sum passes midnight, the date in Tehran is already the next day. The table uses today's offsets.
Going the other way, local noon in Tehran is 05:30 in Brasília, and local midnight is 17:30 (previous day) in Brasília. Because Tehran is ahead, its calendar date is one day later than in Brasília from 17:30 until midnight Brasília time. Keep this in mind for deadlines, flights and anything scheduled around the start or end of a day.
| Brasília (UTC-3) | Tehran (UTC+3:30) |
|---|---|
| 06:00 | 12:30 |
| 09:00 | 15:30 |
| 12:00 | 18:30 |
| 15:00 | 21:30 |
| 18:00 | 00:30 (next day) |
| 21:00 | 03:30 (next day) |
Best time to call Tehran from Brazil
Taking a 9:00 to 18:00 working day on both sides, the shared window runs from 09:00 to 11:30 in Brasília, which is 15:30 to 18:00 in Tehran. That is only 2 hours 30 minutes, so one or two slots a day are all you get; confirm the time in advance.
For several cities at once, use the meeting planner, or convert any hour with the time zone converter.
Sunrise and sunset in Tehran today
Today the Sun rises in Tehran at 06:00 and sets at 17:45 local time, a daylight span of 11h 44min, with solar noon at 11:53. See other places on the sunrise and sunset page.
Where is Tehran?
Tehran is at 35.67° N, 51.43° E (country: Iran). The country page shows its main reference time and neighbours. Compare more places on world time or in the list of cities.