Princeton, NJ to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Princeton, NJ. 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.
Princeton, NJ 19:43 7:43 PM Rio de Janeiro 20:43 8:43 PM You –:–
19:43 7:43 PM
Eastern Daylight Time · UTC-4
☀️ 07:06 · 🌙 18:26
20:43 8:43 PM
Brasilia Standard Time · UTC-3
☀️ 05:25 · 🌙 17:56
·
+1 h
Rio de Janeiro is 1 h ahead of Princeton, NJ.
When you, Princeton, NJ 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
🇺🇸 Princeton, NJ
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 | 🇺🇸 Princeton, NJ | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 19:43 | 20:43 |
| Local date | Sunday, October 11, 2026 | Sunday, October 11, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Princeton, NJ | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:06 | 05:25 |
| Sunset | 18:26 | 17:56 |
| Daylight | 11 h 21 min | 12 h 31 min |
| People on this clock | 29,603 | 6,211,223 |
Compare Princeton, NJ with another city
More comparisons with Princeton, NJ: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Princeton, NJ and Rio de Janeiro: common questions
What is the time difference between Princeton, NJ, and Rio de Janeiro?
Rio de Janeiro is 1 hour ahead: it uses UTC−3, while Princeton is on UTC−4.
If it is 9:00 AM in Princeton, NJ, what time is it in Rio de Janeiro?
At 9:00 AM in Princeton, clocks in Rio de Janeiro show 10:00 AM.
What time is it in Rio de Janeiro when it is 6:00 PM in Princeton, NJ?
When it is 6:00 PM in Princeton, it is 7:00 PM in Rio de Janeiro.
When do working hours in Princeton, NJ, and in Rio de Janeiro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Princeton, which is 10:00 AM to 6:00 PM in Rio de Janeiro.
When is it already the next day in Rio de Janeiro?
From 11:00 PM in Princeton, NJ, 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 Princeton.
Does the time difference between Princeton, NJ, and Rio de Janeiro change?
Yes. The clocks change only in Princeton. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Princeton.
