Istanbul to Grand Bois: time difference
Grand Bois is 1 h ahead of Istanbul. 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.
Istanbul 20:45 8:45 PM Grand Bois 21:45 9:45 PM You –:–
20:45 8:45 PM
GMT+03:00 · UTC+3
☀️ 07:19 · 🌙 18:21
21:45 9:45 PM
Mauritius Standard Time · UTC+4
☀️ 05:38 · 🌙 18:14
·
+1 h
Grand Bois is 1 h ahead of Istanbul.
When you, Istanbul and Grand Bois are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇹🇷 Istanbul
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
🇲🇺 Grand Bois
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 | 🇹🇷 Istanbul | 🇲🇺 Grand Bois |
|---|---|---|
| Local time | 20:45 | 21:45 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | GMT+03:00 | Mauritius Standard Time |
| UTC offset | UTC+3 | UTC+4 |
| Offset from Istanbul | — | +1 h |
| IANA zone | Europe/Istanbul | Indian/Mauritius |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:19 | 05:38 |
| Sunset | 18:21 | 18:14 |
| Daylight | 11 h 2 min | 12 h 36 min |
| People on this clock | 15,701,602 | 7,804 |
Compare Istanbul with another city
More comparisons with Istanbul: the time zones next to it and the far side of the clock.
Big time differences
Istanbul and Grand Bois: common questions
What is the time difference between Istanbul and Grand Bois?
Grand Bois is 1 hour ahead: it uses UTC+4, while Istanbul is on UTC+3.
If it is 9:00 AM in Istanbul, what time is it in Grand Bois?
At 9:00 AM in Istanbul, clocks in Grand Bois show 10:00 AM.
If it is 6:00 PM in Istanbul, what time is it in Grand Bois?
At 6:00 PM in Istanbul, clocks in Grand Bois show 7:00 PM.
When is a good time to call Grand Bois from Istanbul?
Between 9:00 AM and 5:00 PM in Istanbul – that is 10:00 AM to 6:00 PM in Grand Bois – both places are within working hours (9:00 AM–6:00 PM).
From what time in Istanbul is it tomorrow in Grand Bois?
Once it is 11:00 PM in Istanbul, the date in Grand Bois has already changed. Until 1:00 AM in Grand Bois, it is still the previous day in Istanbul.
Does the time gap between Istanbul and Grand Bois change during the year?
No, the clocks change neither in Istanbul nor in Grand Bois, so the gap is 1 hour all year round.
