Sao Paulo to Waltham, MA: time difference
Waltham, 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 08:32 8:32 AM Waltham, MA 07:32 7:32 AM You –:–
08:32 8:32 AM
Brasilia Standard Time · UTC-3
☀️ 05:32 · 🌙 18:13
07:32 7:32 AM
Eastern Daylight Time · UTC-4
☀️ 07:02 · 🌙 18:00
·
−1 h
Waltham, MA is 1 h behind Sao Paulo.
When you, Sao Paulo and Waltham, 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
🇺🇸 Waltham, 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 | 🇺🇸 Waltham, MA |
|---|---|---|
| Local time | 08:32 | 07:32 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 05:32 | 07:02 |
| Sunset | 18:13 | 18:00 |
| Daylight | 12 h 41 min | 10 h 58 min |
| People on this clock | 11,451,999 | 60,636 |
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 Waltham, MA: common questions
What is the time difference between Sao Paulo and Waltham, MA?
Waltham is 1 hour behind: it uses UTC−4, while Sao Paulo is on UTC−3.
What time is it in Waltham, MA, at the start of the working day in Sao Paulo?
The working day in Sao Paulo starts at 9:00 AM; in Waltham it is 8:00 AM at that moment.
What time is it in Waltham, MA, at the end of the working day in Sao Paulo?
The working day in Sao Paulo ends at 6:00 PM; in Waltham it is 5:00 PM at that moment.
When is a good time to call Waltham, 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 Waltham – both places are within working hours (9:00 AM–6:00 PM).
Until what time in Sao Paulo is it still yesterday in Waltham, MA?
Before 1:00 AM in Sao Paulo, the date in Waltham has not changed yet. From 11:00 PM in Waltham, it is already the next day in Sao Paulo.
Does the time gap between Sao Paulo and Waltham, MA, change during the year?
Yes – daylight saving time is used in Waltham but not in Sao Paulo. From November 1, 2026, Waltham will be 2 hours behind Sao Paulo.
