Buffalo, NY to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Buffalo, 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.
Buffalo, NY 07:34 7:34 AM Rio de Janeiro 08:34 8:34 AM You –:–
07:34 7:34 AM
Eastern Daylight Time · UTC-4
☀️ 07:24 · 🌙 18:43
08:34 8:34 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Buffalo, NY.
When you, Buffalo, 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
🇺🇸 Buffalo, 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 | 🇺🇸 Buffalo, NY | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 07:34 | 08:34 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Buffalo, 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 | 07:24 | 05:26 |
| Sunset | 18:43 | 17:55 |
| Daylight | 11 h 19 min | 12 h 30 min |
| People on this clock | 258,071 | 6,211,223 |
Compare Buffalo, NY with another city
More comparisons with Buffalo, NY: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Buffalo, NY and Rio de Janeiro: common questions
What is the time difference between Buffalo, NY, and Rio de Janeiro?
Rio de Janeiro is 1 hour ahead: it uses UTC−3, while Buffalo is on UTC−4.
What time is it in Rio de Janeiro when it is 9:00 AM in Buffalo, NY?
When it is 9:00 AM in Buffalo, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro when it is 6:00 PM in Buffalo, NY?
When it is 6:00 PM in Buffalo, it is 7:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Buffalo, NY?
Between 9:00 AM and 5:00 PM in Buffalo – 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).
From what time in Buffalo, NY, is it tomorrow in Rio de Janeiro?
Once it is 11:00 PM in Buffalo, the date in Rio de Janeiro has already changed. Until 1:00 AM in Rio de Janeiro, it is still the previous day in Buffalo.
Does the time gap between Buffalo, NY, and Rio de Janeiro change during the year?
Yes – daylight saving time is used in Buffalo but not in Rio de Janeiro. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Buffalo.
