Ann Arbor, MI to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Ann Arbor, MI. 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.
Ann Arbor, MI 10:20 10:20 AM Rio de Janeiro 11:20 11:20 AM You –:–
10:20 10:20 AM
Eastern Daylight Time · UTC-4
☀️ 07:43 · 🌙 19:03
11:20 11:20 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Ann Arbor, MI.
When you, Ann Arbor, MI 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
🇺🇸 Ann Arbor, MI
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 | 🇺🇸 Ann Arbor, MI | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 10:20 | 11:20 |
| 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 Ann Arbor, MI | — | +1 h |
| IANA zone | America/Detroit | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:43 | 05:26 |
| Sunset | 19:03 | 17:55 |
| Daylight | 11 h 20 min | 12 h 30 min |
| People on this clock | 123,851 | 6,211,223 |
Compare Ann Arbor, MI with another city
More comparisons with Ann Arbor, MI: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Ann Arbor, MI and Rio de Janeiro: common questions
How many hours ahead of Ann Arbor, MI, is Rio de Janeiro?
The clocks in Rio de Janeiro are 1 hour ahead of those in Ann Arbor (UTC−3 and UTC−4).
If it is 9:00 AM in Ann Arbor, MI, what time is it in Rio de Janeiro?
At 9:00 AM in Ann Arbor, clocks in Rio de Janeiro show 10:00 AM.
What time is it in Rio de Janeiro when it is 6:00 PM in Ann Arbor, MI?
When it is 6:00 PM in Ann Arbor, it is 7:00 PM in Rio de Janeiro.
When is a good time to call Rio de Janeiro from Ann Arbor, MI?
Between 9:00 AM and 5:00 PM in Ann Arbor – 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 is it already the next day in Rio de Janeiro?
From 11:00 PM in Ann Arbor, MI, 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 Ann Arbor.
Is the time difference between Ann Arbor, MI, and Rio de Janeiro the same all year?
No. Only Ann Arbor switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Ann Arbor.
