Sao Paulo to Boston, MA: time difference
Boston, MA is 1 h behind Sao Paulo. 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.
Sao Paulo 23:00 11:00 PM Boston, MA 22:00 10:00 PM You –:–
23:00 11:00 PM
Brasilia Standard Time · UTC-3
☀️ 05:40 · 🌙 18:09
22:00 10:00 PM
Eastern Daylight Time · UTC-4
☀️ 06:51 · 🌙 18:14
·
−1 h
Boston, MA is 1 h behind Sao Paulo.
When you, Sao Paulo and Boston, MA are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇧🇷 Sao Paulo
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
🇺🇸 Boston, MA
23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇧🇷 Sao Paulo | 🇺🇸 Boston, MA |
|---|---|---|
| Local time | 23:00 | 22:00 |
| Local date | Friday, October 9, 2026 | Friday, October 9, 2026 |
| Time zone | Brasilia Standard Time | Eastern Daylight Time |
| UTC offset | UTC-3 | UTC-4 |
| Offset from Sao Paulo | — | −1 h |
| IANA zone | America/Sao Paulo | America/New York |
| Daylight saving | Not observed | On summer time → UTC-5, Nov 1, 01:00 |
| Sunrise | 05:40 | 06:51 |
| Sunset | 18:09 | 18:14 |
| Daylight | 12 h 29 min | 11 h 23 min |
| People on this clock | 11,451,999 | 675,647 |
Compare Sao Paulo with another city
More comparisons with Sao Paulo: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Sao Paulo and Boston, MA: common questions
How many hours behind Sao Paulo is Boston, MA?
The clocks in Boston are 1 hour behind those in Sao Paulo (UTC−4 and UTC−3).
If it is 9:00 AM in Sao Paulo, what time is it in Boston, MA?
At 9:00 AM in Sao Paulo, clocks in Boston show 8:00 AM.
What time is it in Boston, MA, when it is 6:00 PM in Sao Paulo?
When it is 6:00 PM in Sao Paulo, it is 5:00 PM in Boston.
When is a good time to call Boston, MA, from Sao Paulo?
Between 10:00 AM and 6:00 PM in Sao Paulo – that is 9:00 AM to 5:00 PM in Boston – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Sao Paulo is it still yesterday in Boston, MA?
Before 1:00 AM in Sao Paulo, the date in Boston has not changed yet. From 11:00 PM in Boston, it is already the next day in Sao Paulo.
Is the time difference between Sao Paulo and Boston, MA, the same all year?
No. Only Boston switches to summer time, so the gap changes twice a year. From November 1, 2026, Boston will be 2 hours behind Sao Paulo.
