Waltham, MA to Sao Paulo: time difference
Sao Paulo is 1 h ahead of Waltham, 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.
Waltham, MA 06:28 6:28 AM Sao Paulo 07:28 7:28 AM You –:–
06:28 6:28 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 18:00
07:28 7:28 AM
Brasilia Standard Time · UTC-3
☀️ 05:32 · 🌙 18:13
·
+1 h
Sao Paulo is 1 h ahead of Waltham, MA.
When you, Waltham, 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
🇺🇸 Waltham, 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
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Time zones side by side
| Detail | 🇺🇸 Waltham, MA | 🇧🇷 Sao Paulo |
|---|---|---|
| Local time | 06:28 | 07:28 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Waltham, 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 | 07:02 | 05:32 |
| Sunset | 18:00 | 18:13 |
| Daylight | 10 h 58 min | 12 h 41 min |
| People on this clock | 60,636 | 11,451,999 |
Compare Waltham, MA with another city
More comparisons with Waltham, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Waltham, MA and Sao Paulo: common questions
How far ahead of Waltham, MA, is Sao Paulo?
Sao Paulo is 1 hour ahead of Waltham: UTC−3 against UTC−4.
What time is it in Sao Paulo at the start of the working day in Waltham, MA?
The working day in Waltham starts at 9:00 AM; in Sao Paulo it is 10:00 AM at that moment.
What time is it in Sao Paulo at the end of the working day in Waltham, MA?
The working day in Waltham ends at 6:00 PM; in Sao Paulo it is 7:00 PM at that moment.
Is there a time when both Waltham, MA, and Sao Paulo are at work?
Yes: from 9:00 AM to 5:00 PM in Waltham (10:00 AM to 6:00 PM in Sao Paulo), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Sao Paulo compared with Waltham, MA?
The new day starts in Sao Paulo earlier: at 11:00 PM in Waltham it is already midnight there. Until 1:00 AM in Sao Paulo, Waltham is still on the previous day.
Is the time difference between Waltham, MA, and Sao Paulo the same all year?
No. Only Waltham switches to summer time, so the gap changes twice a year. From November 1, 2026, Sao Paulo will be 2 hours ahead of Waltham.
