Athens to Koper: time difference
Koper is 1 h behind Athens. 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.
Athens 23:20 11:20 PM Koper 22:20 10:20 PM You –:–
23:20 11:20 PM
Eastern European Summer Time · UTC+3
☀️ 07:38 · 🌙 18:44
22:20 10:20 PM
Central European Summer Time · UTC+2
☀️ 07:27 · 🌙 18:15
·
−1 h
Koper is 1 h behind Athens.
When you, Athens and Koper are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇷 Athens
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
🇸🇮 Koper
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 | 🇬🇷 Athens | 🇸🇮 Koper |
|---|---|---|
| Local time | 23:20 | 22:20 |
| Local date | Monday, October 19, 2026 | Monday, October 19, 2026 |
| Time zone | Eastern European Summer Time | Central European Summer Time |
| UTC offset | UTC+3 | UTC+2 |
| Offset from Athens | — | −1 h |
| IANA zone | Europe/Athens | Europe/Ljubljana |
| Daylight saving | On summer time → UTC+2, Oct 25, 03:00 | On summer time → UTC+1, Oct 25, 02:00 |
| Sunrise | 07:38 | 07:27 |
| Sunset | 18:44 | 18:15 |
| Daylight | 11 h 6 min | 10 h 48 min |
| People on this clock | 3,090,508 | 24,900 |
Compare Athens with another city
More comparisons with Athens: the time zones next to it and the far side of the clock.
Big time differences
Athens and Koper: common questions
How many hours behind Athens is Koper?
The clocks in Koper are 1 hour behind those in Athens (UTC+2 and UTC+3).
What time is it in Koper at the start of the working day in Athens?
The working day in Athens starts at 9:00 AM; in Koper it is 8:00 AM at that moment.
What time is it in Koper when it is 6:00 PM in Athens?
When it is 6:00 PM in Athens, it is 5:00 PM in Koper.
Is there a time when both Athens and Koper are at work?
Yes: from 10:00 AM to 6:00 PM in Athens (9:00 AM to 5:00 PM in Koper), the working days (9:00 AM–6:00 PM) overlap.
When does the date change in Koper compared with Athens?
The new day starts in Koper later: until 1:00 AM in Athens, it is still the previous day there. From 11:00 PM in Koper, Athens is already on the next day.
Is the time difference between Athens and Koper the same all year?
Yes. Both places switch to summer time and back on the same dates, so the gap remains 1 hour.
