Tbilisi to Kolkata (Calcutta): time difference
Kolkata (Calcutta) is 1 h 30 min ahead of Tbilisi. Live clocks for both, the working hours they share, and how each one sits against your own time.
🇮🇳 Kolkata (Calcutta), India
19
- India Standard Time
- UTC+5:30
- Daytime
☀️ 05:32 · 🌙 17:17 · 11 h 46 min
+1 h 30 min
Your time
One day, 2 clocks
Drag along the band to read any hour in every place at once.
Tbilisi 11:15 11:15 AM Kolkata (Calcutta) 12:45 12:45 PM You –:–
11:15 11:15 AM
Georgia Standard Time · UTC+4
☀️ 07:07 · 🌙 18:30
12:45 12:45 PM
India Standard Time · UTC+5:30
☀️ 05:32 · 🌙 17:17
·
+1 h 30 min
Kolkata (Calcutta) is 1 h 30 min ahead of Tbilisi.
When you, Tbilisi and Kolkata (Calcutta) 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
🇮🇳 Kolkata (Calcutta)
1:30 1:30 AM 2:30 2:30 AM 3:30 3:30 AM 4:30 4:30 AM 5:30 5:30 AM 6:30 6:30 AM 7:30 7:30 AM 8:30 8:30 AM 9:30 9:30 AM 10:30 10:30 AM 11:30 11:30 AM 12:30 12:30 PM 13:30 1:30 PM 14:30 2:30 PM 15:30 3:30 PM 16:30 4:30 PM 17:30 5:30 PM 18:30 6:30 PM 19:30 7:30 PM 20:30 8:30 PM 21:30 9:30 PM 22:30 10:30 PM 23:30 11:30 PM 0:30 12:30 AM
📍 Your time
- Asleep
- Early
- Working hours
- Evening
- Both working
- Right now
Time zones side by side
| Detail | 🇬🇪 Tbilisi | 🇮🇳 Kolkata (Calcutta) |
|---|---|---|
| Local time | 11:15 | 12:45 |
| Local date | Saturday, October 10, 2026 | Saturday, October 10, 2026 |
| Time zone | Georgia Standard Time | India Standard Time |
| UTC offset | UTC+4 | UTC+5:30 |
| Offset from Tbilisi | — | +1 h 30 min |
| IANA zone | Asia/Tbilisi | Asia/Kolkata |
| Daylight saving | Not observed | Not observed |
| Sunrise | 07:07 | 05:32 |
| Sunset | 18:30 | 17:17 |
| Daylight | 11 h 22 min | 11 h 46 min |
| People on this clock | 1,241,700 | 4,486,679 |
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 Kolkata (Calcutta): common questions
How far ahead of Tbilisi is Kolkata (Calcutta)?
Kolkata is 1 hour and 30 minutes ahead of Tbilisi: UTC+5:30 against UTC+4.
If it is 9:00 AM in Tbilisi, what time is it in Kolkata (Calcutta)?
At 9:00 AM in Tbilisi, clocks in Kolkata show 10:30 AM.
If it is 6:00 PM in Tbilisi, what time is it in Kolkata (Calcutta)?
At 6:00 PM in Tbilisi, clocks in Kolkata show 7:30 PM.
When is a good time to call Kolkata (Calcutta) from Tbilisi?
Between 9:00 AM and 4:30 PM in Tbilisi – that is 10:30 AM to 6:00 PM in Kolkata – both places are within working hours (9:00 AM–6:00 PM).
When does the date change in Kolkata (Calcutta) compared with Tbilisi?
The new day starts in Kolkata earlier: at 10:30 PM in Tbilisi it is already midnight there. Until 1:30 AM in Kolkata, Tbilisi is still on the previous day.
Is the time difference between Tbilisi and Kolkata (Calcutta) the same all year?
Yes. Neither Tbilisi nor Kolkata switches to summer time, so the gap is always 1 hour and 30 minutes.
