Istanbul to Ar-rustaq: time difference
Ar-rustaq is 1 h ahead of Istanbul. 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.
Istanbul 20:00 8:00 PM Ar-rustaq 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
Gulf Standard Time · UTC+4
☀️ 06:09 · 🌙 17:44
·
+1 h
Ar-rustaq is 1 h ahead of Istanbul.
When you, Istanbul and Ar-rustaq 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
🇴🇲 Ar-rustaq
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 | 🇴🇲 Ar-rustaq |
|---|---|---|
| Local time | 20:00 | 21:00 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | GMT+03:00 | Gulf Standard Time |
| UTC offset | UTC+3 | UTC+4 |
| Offset from Istanbul | — | +1 h |
| IANA zone | Europe/Istanbul | Asia/Muscat |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:18 | 06:09 |
| Sunset | 18:22 | 17:44 |
| Daylight | 11 h 5 min | 11 h 35 min |
| People on this clock | 15,701,602 | 120,000 |
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 Ar-rustaq: common questions
How far ahead of Istanbul is Ar-rustaq?
Ar-rustaq is 1 hour ahead of Istanbul: UTC+4 against UTC+3.
If it is 9:00 AM in Istanbul, what time is it in Ar-rustaq?
At 9:00 AM in Istanbul, clocks in Ar-rustaq show 10:00 AM.
What time is it in Ar-rustaq at the end of the working day in Istanbul?
The working day in Istanbul ends at 6:00 PM; in Ar-rustaq it is 7:00 PM at that moment.
When is a good time to call Ar-rustaq from Istanbul?
Between 9:00 AM and 5:00 PM in Istanbul – that is 10:00 AM to 6:00 PM in Ar-rustaq – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Ar-rustaq compared with Istanbul?
The new day starts in Ar-rustaq earlier: at 11:00 PM in Istanbul it is already midnight there. Until 1:00 AM in Ar-rustaq, Istanbul is still on the previous day.
Does the time gap between Istanbul and Ar-rustaq change during the year?
No, the clocks change neither in Istanbul nor in Ar-rustaq, so the gap is 1 hour all year round.
