Montreal to Rio das Ostras: time difference
Rio das Ostras is 1 h ahead of Montreal. 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.
Montreal 05:26 5:26 AM Rio das Ostras 06:26 6:26 AM You –:–
05:26 5:26 AM
Eastern Daylight Time · UTC-4
☀️ 07:16 · 🌙 18:03
06:26 6:26 AM
Brasilia Standard Time · UTC-3
☀️ 05:13 · 🌙 17:54
·
+1 h
Rio das Ostras is 1 h ahead of Montreal.
When you, Montreal and Rio das Ostras are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇨🇦 Montreal
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 das Ostras
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 | 🇨🇦 Montreal | 🇧🇷 Rio das Ostras |
|---|---|---|
| Local time | 05:26 | 06:26 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Eastern Daylight Time | Brasilia Standard Time |
| UTC offset | UTC-4 | UTC-3 |
| Offset from Montreal | — | +1 h |
| IANA zone | America/Toronto | America/Sao Paulo |
| Daylight saving | On summer time → UTC-5, Nov 1, 01:00 | Not observed |
| Sunrise | 07:16 | 05:13 |
| Sunset | 18:03 | 17:54 |
| Daylight | 10 h 47 min | 12 h 41 min |
| People on this clock | 1,762,949 | 156,491 |
Compare Montreal with another city
More comparisons with Montreal: the time zones next to it and the far side of the clock.
Nearby time zones
Big time differences
Montreal and Rio das Ostras: common questions
How many hours ahead of Montreal is Rio das Ostras?
The clocks in Rio das Ostras are 1 hour ahead of those in Montreal (UTC−3 and UTC−4).
What time is it in Rio das Ostras at the start of the working day in Montreal?
The working day in Montreal starts at 9:00 AM; in Rio das Ostras it is 10:00 AM at that moment.
What time is it in Rio das Ostras at the end of the working day in Montreal?
The working day in Montreal ends at 6:00 PM; in Rio das Ostras it is 7:00 PM at that moment.
When do working hours in Montreal and in Rio das Ostras overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Montreal, which is 10:00 AM to 6:00 PM in Rio das Ostras.
From what time in Montreal is it tomorrow in Rio das Ostras?
Once it is 11:00 PM in Montreal, the date in Rio das Ostras has already changed. Until 1:00 AM in Rio das Ostras, it is still the previous day in Montreal.
Does the time difference between Montreal and Rio das Ostras change?
Yes. The clocks change only in Montreal. From November 1, 2026, Rio das Ostras will be 2 hours ahead of Montreal.
