Boston, MA to Sao Paulo: time difference
Sao Paulo is 1 h ahead of Boston, MA. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Boston, MA 20:26 8:26 PM Sao Paulo 21:26 9:26 PM You –:–
20:26 8:26 PM
Eastern Daylight Time · UTC-4
☀️ 06:51 · 🌙 18:14
21:26 9:26 PM
Brasilia Standard Time · UTC-3
☀️ 05:40 · 🌙 18:09
·
+1 h
Sao Paulo is 1 h ahead of Boston, MA.
When you, Boston, MA and Sao Paulo are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Boston, MA
0 12 AM 1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM
🇧🇷 Sao Paulo
1 1 AM 2 2 AM 3 3 AM 4 4 AM 5 5 AM 6 6 AM 7 7 AM 8 8 AM 9 9 AM 10 10 AM 11 11 AM 12 12 PM 13 1 PM 14 2 PM 15 3 PM 16 4 PM 17 5 PM 18 6 PM 19 7 PM 20 8 PM 21 9 PM 22 10 PM 23 11 PM 0 12 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
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Time zones side by side
| Detail | 🇺🇸 Boston, MA | 🇧🇷 Sao Paulo |
|---|---|---|
| Local time | 20:26 | 21:26 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Boston, MA | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 06:51 | 05:40 |
| Sunset | 18:14 | 18:09 |
| Daylight | 11 h 23 min | 12 h 29 min |
| People on this clock | 675,647 | 11,451,999 |
Compare Boston, MA with another city
More comparisons with Boston, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Boston, MA and Sao Paulo: common questions
How far ahead of Boston, MA, is Sao Paulo?
Sao Paulo is 1 hour ahead of Boston: UTC−3 against UTC−4.
What time is it in Sao Paulo when it is 9:00 AM in Boston, MA?
When it is 9:00 AM in Boston, it is 10:00 AM in Sao Paulo.
What time is it in Sao Paulo at the end of the working day in Boston, MA?
The working day in Boston ends at 6:00 PM; in Sao Paulo it is 7:00 PM at that moment.
When do working hours in Boston, MA, and in Sao Paulo overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Boston, which is 10:00 AM to 6:00 PM in Sao Paulo.
From what time in Boston, MA, is it tomorrow in Sao Paulo?
Once it is 11:00 PM in Boston, the date in Sao Paulo has already changed. Until 1:00 AM in Sao Paulo, it is still the previous day in Boston.
Does the time gap between Boston, MA, and Sao Paulo change during the year?
Yes – daylight saving time is used in Boston but not in Sao Paulo. From November 1, 2026, Sao Paulo will be 2 hours ahead of Boston.
