Tbilisi to Alton, IL: time difference
Alton, IL is 9 h behind Tbilisi. 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.
Tbilisi 23:18 11:18 PM Alton, IL 14:18 2:18 PM You –:–
23:18 11:18 PM
Georgia Standard Time · UTC+4
☀️ 07:19 · 🌙 18:14
14:18 2:18 PM
Central Daylight Time · UTC-5
☀️ 07:16 · 🌙 18:17
·
−9 h
Alton, IL is 9 h behind Tbilisi.
When you, Tbilisi and Alton, IL are all at the desk
Pick the working hours below – the window every location shares appears once your time zone is known.
Working hours
🇬🇪 Tbilisi
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
🇺🇸 Alton, IL
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 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
📍 Your time
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Time zones side by side
| Detail | 🇬🇪 Tbilisi | 🇺🇸 Alton, IL |
|---|---|---|
| Local time | 23:18 | 14:18 |
| Local date | Tuesday, October 20, 2026 | Tuesday, October 20, 2026 |
| Time zone | Georgia Standard Time | Central Daylight Time |
| UTC offset | UTC+4 | UTC-5 |
| Offset from Tbilisi | — | −9 h |
| IANA zone | Asia/Tbilisi | America/Chicago |
| Daylight saving | Not observed | On summer time → UTC-6, Nov 1, 01:00 |
| Sunrise | 07:19 | 07:16 |
| Sunset | 18:14 | 18:17 |
| Daylight | 10 h 55 min | 11 h 1 min |
| People on this clock | 1,241,700 | 25,676 |
Compare Tbilisi with another city
More comparisons with Tbilisi: the time zones next to it and the far side of the clock.
Big time differences
Tbilisi and Alton, IL: common questions
How many hours behind Tbilisi is Alton, IL?
The clocks in Alton are 9 hours behind those in Tbilisi (UTC−5 and UTC+4).
If it is 9:00 AM in Tbilisi, what time is it in Alton, IL?
At 9:00 AM in Tbilisi, clocks in Alton show 12:00 AM.
What time is it in Alton, IL, at the end of the working day in Tbilisi?
The working day in Tbilisi ends at 6:00 PM; in Alton it is 9:00 AM at that moment.
When do working hours in Tbilisi and in Alton, IL, overlap?
They don't: there are no shared working hours. The start of the day in Tbilisi (9:00 AM) is 12:00 AM in Alton, and the start of the day in Alton is 6:00 PM in Tbilisi.
When is it still the previous day in Alton, IL?
Until 9:00 AM in Tbilisi it is still the previous day in Alton. The other way round, from 3:00 PM in Alton it is already the next day in Tbilisi.
Does the time difference between Tbilisi and Alton, IL, change?
Yes. The clocks change only in Alton. From November 1, 2026, Alton will be 10 hours behind Tbilisi.
