Northampton, MA to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Northampton, MA. Live clocks for both, the working hours they share, and how each one sits against your own time.
+1 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Northampton, MA 17:04 5:04 PM Rio de Janeiro 18:04 6:04 PM You –:–
17:04 5:04 PM
Eastern Daylight Time · UTC-4
☀️ 07:19 · 🌙 17:51
18:04 6:04 PM
Brasilia Standard Time · UTC-3
☀️ 05:11 · 🌙 18:04
·
+1 h
Rio de Janeiro is 1 h ahead of Northampton, MA.
When you, Northampton, MA and Rio de Janeiro are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇺🇸 Northampton, 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
🇧🇷 Rio de Janeiro
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 | 🇺🇸 Northampton, MA | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 17:04 | 18:04 |
| Local date | Wednesday, October 28, 2026 | Wednesday, October 28, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Northampton, 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 | 07:19 | 05:11 |
| Sunset | 17:51 | 18:04 |
| Daylight | 10 h 31 min | 12 h 53 min |
| People on this clock | 28,549 | 6,211,223 |
Compare Northampton, MA with another city
More comparisons with Northampton, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Northampton, MA and Rio de Janeiro: common questions
How far ahead of Northampton, MA, is Rio de Janeiro?
Rio de Janeiro is 1 hour ahead of Northampton: UTC−3 against UTC−4.
What time is it in Rio de Janeiro when it is 9:00 AM in Northampton, MA?
When it is 9:00 AM in Northampton, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro at the end of the working day in Northampton, MA?
The working day in Northampton ends at 6:00 PM; in Rio de Janeiro it is 7:00 PM at that moment.
Is there a time when both Northampton, MA, and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Northampton (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When is it already the next day in Rio de Janeiro?
From 11:00 PM in Northampton, MA, it is already the next day in Rio de Janeiro. The other way round, until 1:00 AM in Rio de Janeiro it is still the previous day in Northampton.
Does the time difference between Northampton, MA, and Rio de Janeiro change?
Yes. The clocks change only in Northampton. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Northampton.
