Kos to Tbilisi: time difference
Tbilisi is 1 h ahead of Kos. 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.
Kos 08:21 8:21 AM Tbilisi 09:21 9:21 AM You –:–
08:21 8:21 AM
Eastern European Summer Time · UTC+3
☀️ 07:24 · 🌙 18:30
09:21 9:21 AM
Georgia Standard Time · UTC+4
☀️ 07:19 · 🌙 18:14
·
+1 h
Tbilisi is 1 h ahead of Kos.
When you, Kos and Tbilisi are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇷 Kos
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
🇬🇪 Tbilisi
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 | 🇬🇷 Kos | 🇬🇪 Tbilisi |
|---|---|---|
| Local time | 08:21 | 09:21 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Eastern European Summer Time | Georgia Standard Time |
| UTC offset | UTC+3 | UTC+4 |
| Offset from Kos | — | +1 h |
| IANA zone | Europe/Athens | Asia/Tbilisi |
| Daylight saving | On summer time → UTC+2, Oct 25, 03:00 | Not observed |
| Sunrise | 07:24 | 07:19 |
| Sunset | 18:30 | 18:14 |
| Daylight | 11 h 6 min | 10 h 55 min |
| People on this clock | 30,947 | 1,241,700 |
Compare Kos with another city
More comparisons with Kos: the time zones next to it and the far side of the clock.
Big time differences
Kos and Tbilisi: common questions
How far ahead of Kos is Tbilisi?
Tbilisi is 1 hour ahead of Kos: UTC+4 against UTC+3.
What time is it in Tbilisi at the start of the working day in Kos?
The working day in Kos starts at 9:00 AM; in Tbilisi it is 10:00 AM at that moment.
If it is 6:00 PM in Kos, what time is it in Tbilisi?
At 6:00 PM in Kos, clocks in Tbilisi show 7:00 PM.
When do working hours in Kos and in Tbilisi overlap?
Working hours (9:00 AM–6:00 PM) overlap from 9:00 AM to 5:00 PM in Kos, which is 10:00 AM to 6:00 PM in Tbilisi.
When is it already the next day in Tbilisi?
From 11:00 PM in Kos it is already the next day in Tbilisi. The other way round, until 1:00 AM in Tbilisi it is still the previous day in Kos.
Does the time difference between Kos and Tbilisi change?
Yes. The clocks change only in Kos. From October 25, 2026, Tbilisi will be 2 hours ahead of Kos.
