Time Comparison
Comparing time between Kolkata and London? Find the best time to call, schedule meetings, and understand the exact time difference.
Kolkata is 5.5 hours behind London. Review the overlapping business hours below to ensure seamless cross-timezone collaboration.
03:01:14
Monday, March 23, 2026
Kolkata, India
Asia/Kolkata
Standard Time
UTC+5:3021:31:14
Sunday, March 22, 2026
London, United Kingdom
Europe/London
Standard Time
UTC+0Time Difference: 5.5 hours behind
24-Hour Timeline Comparison
Kolkata
5.5
8.5
11.5
14.5
17.5
20.5
23.5
2.5
London
00
03
06
09
12
15
18
21
Working Hours Overlap
Working hours (9-17)
Daytime (6-22)
Night (22-6)
Overlap
Current hour
Best time to call from Kolkata to London
Kolkata
14.5:00
↕
London
09:00
Kolkata
15.5:00
↕
London
10:00
Kolkata
16.5:00
↕
London
11:00
Overlap Hours
Business Hours (9AM-5PM)
| UTC | Kolkata | London |
|---|---|---|
| 00:00 | 5.5:00 | 00:00 |
| 01:00 | 6.5:00 | 01:00 |
| 02:00 | 7.5:00 | 02:00 |
| 03:00 | 8.5:00 | 03:00 |
| 04:00 | 9.5:00 | 04:00 |
| 05:00 | 10.5:00 | 05:00 |
| 06:00 | 11.5:00 | 06:00 |
| 07:00 | 12.5:00 | 07:00 |
| 08:00 | 13.5:00 | 08:00 |
| 09:00 | 14.5:00 | 09:00 |
| 10:00 | 15.5:00 | 10:00 |
| 11:00 | 16.5:00 | 11:00 |
| 12:00 | 17.5:00 | 12:00 |
| 13:00 | 18.5:00 | 13:00 |
| 14:00 | 19.5:00 | 14:00 |
| 15:00 | 20.5:00 | 15:00 |
| 16:00 | 21.5:00 | 16:00 |
| 17:00 | 22.5:00 | 17:00 |
| 18:00 | 23.5:00 | 18:00 |
| 19:00 | 0.5:00 | 19:00 |
| 20:00 | 1.5:00 | 20:00 |
| 21:00 | 2.5:00 | 21:00 |
| 22:00 | 3.5:00 | 22:00 |
| 23:00 | 4.5:00 | 23:00 |