Istanbul to Bytom: time difference
Bytom is 1 h behind 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 10:15 10:15 AM Bytom 09:15 9:15 AM You –:–
10:15 10:15 AM
GMT+03:00 · UTC+3
☀️ 07:19 · 🌙 18:21
09:15 9:15 AM
Central European Summer Time · UTC+2
☀️ 07:12 · 🌙 17:49
·
−1 h
Bytom is 1 h behind Istanbul.
When you, Istanbul and Bytom 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
🇵🇱 Bytom
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 20 8 PM 21 9 PM 22 10 PM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇹🇷 Istanbul | 🇵🇱 Bytom |
|---|---|---|
| Local time | 10:15 | 09:15 |
| Local date | Sunday, October 18, 2026 | Sunday, October 18, 2026 |
| Time zone | GMT+03:00 | Central European Summer Time |
| UTC offset | UTC+3 | UTC+2 |
| Offset from Istanbul | — | −1 h |
| IANA zone | Europe/Istanbul | Europe/Warsaw |
| Daylight saving | Not observed | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:19 | 07:12 |
| Sunset | 18:21 | 17:49 |
| Daylight | 11 h 2 min | 10 h 37 min |
| People on this clock | 15,701,602 | 162,250 |
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 Bytom: common questions
How many hours behind Istanbul is Bytom?
The clocks in Bytom are 1 hour behind those in Istanbul (UTC+2 and UTC+3).
What time is it in Bytom at the start of the working day in Istanbul?
The working day in Istanbul starts at 9:00 AM; in Bytom it is 8:00 AM at that moment.
What time is it in Bytom at the end of the working day in Istanbul?
The working day in Istanbul ends at 6:00 PM; in Bytom it is 5:00 PM at that moment.
Is there a time when both Istanbul and Bytom are at work?
Yes: from 10:00 AM to 6:00 PM in Istanbul (9:00 AM to 5:00 PM in Bytom), the working days (9:00 AM–6:00 PM) overlap.
When is it still the previous day in Bytom?
Until 1:00 AM in Istanbul it is still the previous day in Bytom. The other way round, from 11:00 PM in Bytom it is already the next day in Istanbul.
Does the time difference between Istanbul and Bytom change?
Yes. The clocks change only in Bytom. From October 25, 2026, Bytom will be 2 hours behind Istanbul.
