Oyster Bay, NY to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Oyster Bay, NY. 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.
Oyster Bay, NY 19:06 7:06 PM Rio de Janeiro 20:06 8:06 PM You –:–
19:06 7:06 PM
Eastern Daylight Time · UTC-4
☀️ 07:01 · 🌙 18:21
20:06 8:06 PM
Brasilia Standard Time · UTC-3
☀️ 05:25 · 🌙 17:56
·
+1 h
Rio de Janeiro is 1 h ahead of Oyster Bay, NY.
When you, Oyster Bay, NY 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
🇺🇸 Oyster Bay, NY
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 | 🇺🇸 Oyster Bay, NY | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 19:06 | 20:06 |
| 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 Oyster Bay, NY | — | +1 h |
| IANA zone | America/New York | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:01 | 05:25 |
| Sunset | 18:21 | 17:56 |
| Daylight | 11 h 20 min | 12 h 31 min |
| People on this clock | 301,332 | 6,211,223 |
Compare Oyster Bay, NY with another city
More comparisons with Oyster Bay, NY: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Oyster Bay, NY and Rio de Janeiro: common questions
What is the time difference between Oyster Bay, NY, and Rio de Janeiro?
Rio de Janeiro is 1 hour ahead: it uses UTC−3, while Oyster Bay is on UTC−4.
What time is it in Rio de Janeiro at the start of the working day in Oyster Bay, NY?
The working day in Oyster Bay starts at 9:00 AM; in Rio de Janeiro it is 10:00 AM at that moment.
If it is 6:00 PM in Oyster Bay, NY, what time is it in Rio de Janeiro?
At 6:00 PM in Oyster Bay, clocks in Rio de Janeiro show 7:00 PM.
When is a good time to call Rio de Janeiro from Oyster Bay, NY?
Between 9:00 AM and 5:00 PM in Oyster Bay – 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 Oyster Bay, NY?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Oyster Bay it is already midnight there. Until 1:00 AM in Rio de Janeiro, Oyster Bay is still on the previous day.
Does the time gap between Oyster Bay, NY, and Rio de Janeiro change during the year?
Yes – daylight saving time is used in Oyster Bay but not in Rio de Janeiro. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Oyster Bay.
