Ottawa to Rio de Janeiro: time difference
Rio de Janeiro is 1 h ahead of Ottawa. 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.
Ottawa 23:32 11:32 PM Rio de Janeiro 00:32 12:32 AM You –:–
23:32 11:32 PM
Eastern Daylight Time · UTC-4
☀️ 07:12 · 🌙 18:30
00:32 12:32 AM
Brasilia Standard Time · UTC-3
☀️ 05:26 · 🌙 17:55
·
+1 h
Rio de Janeiro is 1 h ahead of Ottawa.
When you, Ottawa 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
🇨🇦 Ottawa
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
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇨🇦 Ottawa | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 23:32 | 00:32 |
| Local date | Friday, October 9, 2026 | Saturday, October 10, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Ottawa | — | +1 h |
| IANA zone | America/Toronto | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:12 | 05:26 |
| Sunset | 18:30 | 17:55 |
| Daylight | 11 h 18 min | 12 h 30 min |
| People on this clock | 1,000,000 | 6,211,223 |
Compare Ottawa with another city
More comparisons with Ottawa: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Ottawa and Rio de Janeiro: common questions
What is the time difference between Ottawa and Rio de Janeiro?
Rio de Janeiro is 1 hour ahead: it uses UTC−3, while Ottawa is on UTC−4.
What time is it in Rio de Janeiro at the start of the working day in Ottawa?
The working day in Ottawa starts at 9:00 AM; in Rio de Janeiro it is 10:00 AM at that moment.
If it is 6:00 PM in Ottawa, what time is it in Rio de Janeiro?
At 6:00 PM in Ottawa, clocks in Rio de Janeiro show 7:00 PM.
Is there a time when both Ottawa and Rio de Janeiro are at work?
Yes: from 9:00 AM to 5:00 PM in Ottawa (10:00 AM to 6:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Rio de Janeiro compared with Ottawa?
The new day starts in Rio de Janeiro earlier: at 11:00 PM in Ottawa it is already midnight there. Until 1:00 AM in Rio de Janeiro, Ottawa is still on the previous day.
Is the time difference between Ottawa and Rio de Janeiro the same all year?
No. Only Ottawa switches to summer time, so the gap changes twice a year. From November 1, 2026, Rio de Janeiro will be 2 hours ahead of Ottawa.
