Attleboro, MA to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Attleboro, 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.
Attleboro, MA 11:02 11:02 AM Rio de Janeiro 12:02 12:02 PM You –:–
11:02 11:02 AM
Eastern Daylight Time · UTC-4
☀️ 07:01 · 🌙 18:00
12:02 12:02 PM
Brasilia Standard Time · UTC-3
☀️ 05:19 · 🌙 17:59
·
+1 h
Rio de Janeiro is 1 h ahead of Attleboro, MA.
When you, Attleboro, 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
🇺🇸 Attleboro, 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 | 🇺🇸 Attleboro, MA | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 11:02 | 12:02 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Attleboro, 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 | 07:01 | 05:19 |
| Sunset | 18:00 | 17:59 |
| Daylight | 10 h 59 min | 12 h 40 min |
| People on this clock | 46,461 | 6,211,223 |
Compare Attleboro, MA with another city
More comparisons with Attleboro, MA: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Attleboro, MA and Rio de Janeiro: common questions
How many hours ahead of Attleboro, MA, is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Attleboro (UTC−3 and UTC−4).
What time is it in Rio de Janeiro when it is 9:00 AM in Attleboro, MA?
When it is 9:00 AM in Attleboro, it is 10:00 AM in Rio de Janeiro.
What time is it in Rio de Janeiro when it is 6:00 PM in Attleboro, MA?
When it is 6:00 PM in Attleboro, it is 7:00 PM in Rio de Janeiro.
When do working hours in Attleboro, MA, and in Rio de Janeiro overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Attleboro, which is 10:00 AM to 6:00 PM in Rio de Janeiro.
From what time in Attleboro, MA, is it tomorrow in Rio de Janeiro?
Once it is 11:00 PM in Attleboro, the date in Rio de Janeiro has already changed. Until 1:00 AM in Rio de Janeiro, it is still the previous day in Attleboro.
Is the time difference between Attleboro, MA, and Rio de Janeiro the same all year?
No. Only Attleboro switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Attleboro.
