Casablanca to Rio de Janeiro: time difference
Rio de Janeiro is 4 h behind Casablanca. Live clocks for both, the working hours they share, and how each one sits against your own time.
−4 h
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Casablanca 03:45 3:45 AM Rio de Janeiro 23:45 11:45 PM You –:–
03:45 3:45 AM
GMT+01:00 · UTC+1
☀️ 07:32 · 🌙 19:05
23:45 11:45 PM
Brasilia Standard Time · UTC-3
☀️ 05:27 · 🌙 17:55
·
−4 h
Rio de Janeiro is 4 h behind Casablanca.
When you, Casablanca 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
🇲🇦 Casablanca
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
20 8 PM 21 9 PM 22 10 PM 23 11 PM 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
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇲🇦 Casablanca | 🇧🇷 Rio de Janeiro |
|---|---|---|
| Local time | 03:45 | 23:45 |
| Local date | Saturday, October 10, 2026 | Friday, October 9, 2026 |
| Time zone | GMT+01:00 | Brasilia Standard Time |
| UTC offset | UTC+1 | UTC-3 |
| Offset from Casablanca | — | −4 h |
| IANA zone | Africa/Casablanca | America/Sao Paulo |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:32 | 05:27 |
| Sunset | 19:05 | 17:55 |
| Daylight | 11 h 33 min | 12 h 28 min |
| People on this clock | 3,215,935 | 6,211,223 |
Compare Casablanca with another city
More comparisons with Casablanca: the time zones next to it and the far side of the clock.
Big time differences
Casablanca and Rio de Janeiro: common questions
How many hours behind Casablanca is Rio de Janeiro?
The clocks in Rio de Janeiro are 3 hours behind those in Casablanca (UTC−3 and UTC+0).
What time is it in Rio de Janeiro at the start of the working day in Casablanca?
The working day in Casablanca starts at 9:00 AM; in Rio de Janeiro it is 6:00 AM at that moment.
What time is it in Rio de Janeiro at the end of the working day in Casablanca?
The working day in Casablanca ends at 6:00 PM; in Rio de Janeiro it is 3:00 PM at that moment.
Is there a time when both Casablanca and Rio de Janeiro are at work?
Yes: from 12:00 PM to 6:00 PM in Casablanca (9:00 AM to 3:00 PM in Rio de Janeiro), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Rio de Janeiro?
Until 3:00 AM in Casablanca it is still the previous day in Rio de Janeiro. The other way round, from 9:00 PM in Rio de Janeiro it is already the next day in Casablanca.
Does the time gap between Casablanca and Rio de Janeiro change during the year?
No, the clocks change neither in Casablanca nor in Rio de Janeiro, so the gap is 3 hours all year round.
