Summit, NJ to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Summit, 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.
Summit, NJ 03:46 3:46 AM Rio de Janeiro 04:46 4:46 AM You –:–
03:46 3:46 AM
Eastern Daylight Time · UTC-4
☀️ 07:06 · 🌙 18:23
04:46 4:46 AM
Brasilia Standard Time · UTC-3
☀️ 05:24 · 🌙 17:56
·
+1 h
Rio de Janeiro is 1 h ahead of Summit, NJ.
When you, Summit, 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
🇺🇸 Summit, 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 | 🇺🇸 Summit, NJ | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 03:46 | 04:46 |
| Local date | Monday, October 12, 2026 | Monday, October 12, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Summit, 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 | 05:24 |
| Sunset | 18:23 | 17:56 |
| Daylight | 11 h 17 min | 12 h 32 min |
| People on this clock | 11,161 | 6,211,223 |
Compare Summit, NJ with another city
More comparisons with Summit, NJ: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Summit, NJ and Rio de Janeiro: common questions
What is the time difference between Summit, NJ, and Rio de Janeiro?
Rio de Janeiro is 1 hour ahead: it uses UTC−3, while Summit is on UTC−4.
If it is 9:00 AM in Summit, NJ, what time is it in Rio de Janeiro?
At 9:00 AM in Summit, clocks in Rio de Janeiro show 10:00 AM.
If it is 6:00 PM in Summit, NJ, what time is it in Rio de Janeiro?
At 6:00 PM in Summit, clocks in Rio de Janeiro show 7:00 PM.
When is a good time to call Rio de Janeiro from Summit, NJ?
Between 9:00 AM and 5:00 PM in Summit – that is 10:00 AM to 6:00 PM in Rio de Janeiro – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Rio de Janeiro compared with Summit, NJ?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Summit it is already midnight there. Until 1:00 AM in Rio de Janeiro, Summit is still on the previous day.
Is the time difference between Summit, NJ, and Rio de Janeiro the same all year?
No. Only Summit switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Summit.
