Casablanca to Guarulhos: time difference
Guarulhos is 4 h behind Casablanca. Live clocks for both, the working hours they share, and how each one sits against your own time.
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Casablanca 07:54 7:54 AM Guarulhos 03:54 3:54 AM You –:–
07:54 7:54 AM
GMT+01:00 · UTC+1
☀️ 07:38 · 🌙 18:55
03:54 3:54 AM
Brasilia Standard Time · UTC-3
☀️ 05:31 · 🌙 18:12
·
−4 h
Guarulhos is 4 h behind Casablanca.
When you, Casablanca and Guarulhos 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
🇧🇷 Guarulhos
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 | 🇧🇷 Guarulhos |
|---|---|---|
| Local time | 07:54 | 03:54 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 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 | 07:38 | 05:31 |
| Sunset | 18:55 | 18:12 |
| Daylight | 11 h 17 min | 12 h 41 min |
| People on this clock | 3,215,935 | 1,291,771 |
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 Guarulhos: common questions
What is the time difference between Casablanca and Guarulhos?
Guarulhos is 3 hours behind: it uses UTC−3, while Casablanca is on UTC+0.
If it is 9:00 AM in Casablanca, what time is it in Guarulhos?
At 9:00 AM in Casablanca, clocks in Guarulhos show 6:00 AM.
What time is it in Guarulhos at the end of the working day in Casablanca?
The working day in Casablanca ends at 6:00 PM; in Guarulhos it is 3:00 PM at that moment.
Is there a time when both Casablanca and Guarulhos are at work?
Yes: from 12:00 PM to 6:00 PM in Casablanca (9:00 AM to 3:00 PM in Guarulhos), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Guarulhos?
Until 3:00 AM in Casablanca it is still the previous day in Guarulhos. The other way round, from 9:00 PM in Guarulhos it is already the next day in Casablanca.
Is the time difference between Casablanca and Guarulhos the same all year?
Yes. Neither Casablanca nor Guarulhos switches to summer time, so the gap is always 3 hours.
