Tehran is 6 hours 30 minutes ahead of Brasília.

Frequently asked

Quick answers about converting between Tehran and Brasília. Can't find what you need? Email [email protected].

What is the time difference between Tehran and Brasília?

Tehran is 6 hours 30 minutes ahead of Brasília right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.

When it's 9am in Tehran, what time is it in Brasília?

9am in Tehran is 2:30am in Brasília. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.

What's the best time for a call between Tehran and Brasília?

4pm–5pm in Tehran lines up with 9:30am–10:30am in Brasília — both sides are inside a 9-to-5 working day.

Does this account for daylight saving time?

Yes. We track every clock change in both places, so the abbreviations you see — +03:30 and -03:00 — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.

Why is the date sometimes different on each side?

When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.