Istanbul to Quatre Bornes: time difference
Quatre Bornes 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 20:00 8:00 PM Quatre Bornes 21:00 9:00 PM You –:–
20:00 8:00 PM
GMT+03:00 · UTC+3
☀️ 07:18 · 🌙 18:22
21:00 9:00 PM
Mauritius Standard Time · UTC+4
☀️ 05:39 · 🌙 18:13
·
+1 h
Quatre Bornes is 1 h ahead of Istanbul.
When you, Istanbul and Quatre Bornes 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
🇲🇺 Quatre Bornes
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 | 🇲🇺 Quatre Bornes |
|---|---|---|
| Local time | 20:00 | 21:00 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 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 | 07:18 | 05:39 |
| Sunset | 18:22 | 18:13 |
| Daylight | 11 h 5 min | 12 h 34 min |
| People on this clock | 15,701,602 | 81,773 |
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 Quatre Bornes: common questions
How many hours ahead of Istanbul is Quatre Bornes?
The clocks in Quatre Bornes are 1 hour ahead of those in Istanbul (UTC+4 and UTC+3).
What time is it in Quatre Bornes at the start of the working day in Istanbul?
The working day in Istanbul starts at 9:00 AM; in Quatre Bornes it is 10:00 AM at that moment.
What time is it in Quatre Bornes when it is 6:00 PM in Istanbul?
When it is 6:00 PM in Istanbul, it is 7:00 PM in Quatre Bornes.
Is there a time when both Istanbul and Quatre Bornes are at work?
Yes: from 9:00 AM to 5:00 PM in Istanbul (10:00 AM to 6:00 PM in Quatre Bornes), the working days (9:00 AM–6:00 PM) overlap.
From what time in Istanbul is it tomorrow in Quatre Bornes?
Once it is 11:00 PM in Istanbul, the date in Quatre Bornes has already changed. Until 1:00 AM in Quatre Bornes, it is still the previous day in Istanbul.
Is the time difference between Istanbul and Quatre Bornes the same all year?
Yes. Neither Istanbul nor Quatre Bornes switches to summer time, so the gap is always 1 hour.
