🇳🇱 Heerlen, Netherlands
51
- Central European Summer Time
- UTC+2
- Night
☀️ 08:03 · 🌙 18:42 · 10 h 39 min
Heerlen to Istanbul: time difference
Istanbul is 1 h ahead of Heerlen. 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.
Heerlen 21:54 9:54 PM Istanbul 22:54 10:54 PM You –:–
21:54 9:54 PM
Central European Summer Time · UTC+2
☀️ 08:03 · 🌙 18:42
22:54 10:54 PM
GMT+03:00 · UTC+3
☀️ 07:18 · 🌙 18:22
·
+1 h
Istanbul is 1 h ahead of Heerlen.
When you, Heerlen and Istanbul are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇳🇱 Heerlen
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
🇹🇷 Istanbul
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 | 🇳🇱 Heerlen | 🇹🇷 Istanbul |
|---|---|---|
| Local time | 21:54 | 22:54 |
| Local date | Saturday, October 17, 2026 | Saturday, October 17, 2026 |
| Time zone | Central European Summer Time | GMT+03:00 |
| UTC offset | UTC+2 | UTC+3 |
| Offset from Heerlen | — | +1 h |
| IANA zone | Europe/Amsterdam | Europe/Istanbul |
| Daylight saving | On summer time → UTC+1, Oct 25, 02:00 | Not observed |
| Sunrise | 08:03 | 07:18 |
| Sunset | 18:42 | 18:22 |
| Daylight | 10 h 39 min | 11 h 5 min |
| People on this clock | 87,086 | 15,701,602 |
Compare Heerlen with another city
More comparisons with Heerlen: the time zones next to it and the far side of the clock.
Big time differences
Heerlen and Istanbul: common questions
What is the time difference between Heerlen and Istanbul?
Istanbul is 1 hour ahead: it uses UTC+3, while Heerlen is on UTC+2.
What time is it in Istanbul at the start of the working day in Heerlen?
The working day in Heerlen starts at 9:00 AM; in Istanbul it is 10:00 AM at that moment.
What time is it in Istanbul when it is 6:00 PM in Heerlen?
When it is 6:00 PM in Heerlen, it is 7:00 PM in Istanbul.
When do working hours in Heerlen and in Istanbul overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Heerlen, which is 10:00 AM to 6:00 PM in Istanbul.
When is it already the next day in Istanbul?
From 11:00 PM in Heerlen it is already the next day in Istanbul. The other way round, until 1:00 AM in Istanbul it is still the previous day in Heerlen.
Does the time gap between Heerlen and Istanbul change during the year?
Yes – daylight saving time is used in Heerlen but not in Istanbul. From October 25, 2026, Istanbul will be 2 hours ahead of Heerlen.
