Boston
Exact time synced with atomic clocks (IANA + NTP)
Wednesday, May 20, 2026
United States · America/New_York · EDT
Boston and São Paulo Time Difference
Boston is 1h behind São Paulo
São Paulo
Exact time synced with atomic clocks (IANA + NTP)
Wednesday, May 20, 2026
Brazil · America/Sao_Paulo · GMT-3
Best time for work calls
If you are scheduling a call between Boston and São Paulo, the overlap window is limited to typical business hours. When it is 9 am in Boston it is 10 am in São Paulo — a workable window for scheduling. The latest reasonable overlap is around 4 pm in Boston (5 pm in São Paulo). Outside this window there is effectively no good overlap for regular office hours.
Best time for family calls
Boston and São Paulo have a comfortable window for a family call — no awkward alarms required. Boston is 1 hour behind São Paulo, which gives you 2 hours of genuine overlap when both sides are free. Aim for between 6 pm and 8 pm in Boston — that lands at 7 pm to 9 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.
Boston
Memorial Day
May 25in 5dJuneteenth National Independence Day
Jun 19in 30dIndependence Day
Jul 3in 44d
Daylight Cycle
🌅 Dawn4:46:39 AM
☀️ Sunrise5:19:23 AM
🌞 Solar Noon12:42:11 PM
🌇 Golden Hour7:24:08 PM
🌆 Sunset8:04:59 PM
🌃 Dusk8:37:44 PM
Day length14:45:36
Data via sunrisesunset.io
Current Weather
Condition🌙 Mainly clear
Temperature24°C
Feels like22°C
Humidity47%
Wind10 mph W
Data via Open-Meteo · Updates every 30 min
Moon Phase
Phase🌒 Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise09:52
Moonset00:33
São Paulo
Corpus Christi
Jun 4in 15dConstitutionalist Revolution of 1932
Jul 9in 50dIndependence Day
Sep 7in 110d
Daylight Cycle
🌅 Dawn6:08:36 AM
☀️ Sunrise6:32:35 AM
🌞 Solar Noon12:04:29 PM
🌇 Golden Hour5:04:04 PM
🌆 Sunset5:36:23 PM
🌃 Dusk6:00:22 PM
Day length11:03:48
Data via sunrisesunset.io
Current Weather
Condition🌙 Mainly clear
Temperature15°C
Feels like16°C
Humidity97%
Wind3 mph SE
Data via Open-Meteo · Updates every 30 min
Moon Phase
Phase🌒 Waxing Crescent
Illumination24%
CycleWaxing
Moon age4.8 days
Moonrise11:22
Moonset21:27