Time in Kolkata vs Bangkok
Kolkata keeps IST (UTC+5:30) and Bangkok keeps ICT (UTC+7) today. Bangkok is 1½ hours ahead of Kolkata; the rows below read both clocks live.
The working day, side by side
Hours shaded in both rows are inside working hours in both cities: 11:00–18:00 in Bangkok (09:00–16:00 your time).
| City | 00:00 in Kolkata | 01:00 in Kolkata | 02:00 in Kolkata | 03:00 in Kolkata | 04:00 in Kolkata | 05:00 in Kolkata | 06:00 in Kolkata | 07:00 in Kolkata | 08:00 in Kolkata | 09:00 in Kolkata | 10:00 in Kolkata | 11:00 in Kolkata | 12:00 in Kolkata | 13:00 in Kolkata | 14:00 in Kolkata | 15:00 in Kolkata | 16:00 in Kolkata | 17:00 in Kolkata | 18:00 in Kolkata | 19:00 in Kolkata | 20:00 in Kolkata | 21:00 in Kolkata | 22:00 in Kolkata | 23:00 in Kolkata |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kolkata—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Bangkok—— | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
- Working hours
- Shoulder
- Night
- Overlap
Do more with Kolkata and Bangkok
Best hours to call
09:00 in Kolkata
Inside working hours on both sides
11:00 in Bangkok
10:00 in Kolkata
Inside working hours on both sides
12:00 in Bangkok
11:00 in Kolkata
Inside working hours on both sides
13:00 in Bangkok
12:00 in Kolkata
Inside working hours on both sides
14:00 in Bangkok
Where daylight saving pulls them apart
Neither Kolkata nor Bangkok changes its clocks, so the gap above holds all year.
Also useful
Common questions
How many hours ahead is Bangkok of Kolkata?
Bangkok is 1½ hours ahead of Kolkata right now. The gap is not fixed: it moves whenever either side changes its clocks.
What is the best time to call between Kolkata and Bangkok?
Any hour in 09:00–16:00 Kolkata time is inside working hours in both cities.
Do Kolkata and Bangkok change clocks on the same date?
Neither city changes its clocks, so the gap between them never moves.