
Exact time synced with atomic clocks (IANA + NTP)
Monday, June 29, 2026
Iran · Asia/Tehran · GMT+3:30
Tehran is 6.5h ahead of São Paulo

Exact time synced with atomic clocks (IANA + NTP)
Monday, June 29, 2026
Iran · Asia/Tehran · GMT+3:30

Exact time synced with atomic clocks (IANA + NTP)
Monday, June 29, 2026
Brazil · America/Sao_Paulo · GMT-3
If you are scheduling a call between Tehran and São Paulo, there is very limited or no overlap in normal business hours. Consider early-morning or late-evening calls for one side, or use async communication.
Tehran and São Paulo have a comfortable window for a family call — no awkward alarms required. Tehran is 6.5 hours ahead of São Paulo, which gives you 4 hours of genuine overlap when both sides are free. Aim for between 6 pm and 10 pm in Tehran — that lands at 11:30 am to 3:30 pm in São Paulo, after the school run and before anyone's ready for bed. For a Sunday catch-up or a midweek check-in, this is the sweet spot.
No public holidays on record for this country
Daylight Cycle
Data via sunrisesunset.io
Current Weather
Data via Open-Meteo · Updates every 30 min
Moon Phase
Constitutionalist Revolution of 1932
Independence Day
Our Lady of Aparecida
Daylight Cycle
Data via sunrisesunset.io
Current Weather
Data via Open-Meteo · Updates every 30 min
Moon Phase