London to Kolkata Time Difference
🇬🇧 London is currently 5.5 hours ahead of 🇮🇳 Kolkata. This difference varies between 4.5h and 5.5h due to Daylight Saving Time.
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Atin 🇬🇧 London→it will be—in 🇮🇳 Kolkata
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Difference
+5.5h
Business overlap
3h
Distance
7,962 km
Approx. flight
9.4h
Hour-by-Hour: London to Kolkata
| 🇬🇧 London | 🇮🇳 Kolkata | Note |
|---|---|---|
| 12:00 AM | 5:30 AM | |
| 1:00 AM | 6:30 AM | |
| 2:00 AM | 7:30 AM | |
| 3:00 AM | 8:30 AM | |
| 4:00 AM | 9:30 AM | |
| 5:00 AM | 10:30 AM | |
| 6:00 AM | 11:30 AM | |
| 7:00 AM | 12:30 PM | |
| 8:00 AM | 1:30 PM | |
| 9:00 AM | 2:30 PM | |
| 10:00 AM | 3:30 PM | |
| 11:00 AM | 4:30 PM | |
| 12:00 PM | 5:30 PM | |
| 1:00 PM | 6:30 PM | |
| 2:00 PM | 7:30 PM | |
| 3:00 PM | 8:30 PM | |
| 4:00 PM | 9:30 PM | |
| 5:00 PM | 10:30 PM | |
| 6:00 PM | 11:30 PM | |
| 7:00 PM | 12:30 AM(next day) | Next day |
| 8:00 PM | 1:30 AM(next day) | Next day |
| 9:00 PM | 2:30 AM(next day) | Next day |
| 10:00 PM | 3:30 AM(next day) | Next day |
| 11:00 PM | 4:30 AM(next day) | Next day |
Daylight Saving Time (DST)
London observes Daylight Saving Time, while Kolkata does not. This causes the time difference to shift between 4.5 hours ahead and 5.5 hours ahead depending on the season. Currently, London is 5.5 hours ahead relative to Kolkata.
Min difference
4.5h
Max difference
5.5h
Best Meeting Times
There are 3 overlapping business hours between London and Kolkata (9 AM – 6 PM in each city).
🇬🇧 London
9:00 AM – 12:00 PM
🇮🇳 Kolkata
2:30 PM – 5:30 PM
Frequently Asked Questions
What is the time difference between London and Kolkata?
The time difference between London and Kolkata is currently 5.5 hours ahead. London uses GMT (UTC+0), while Kolkata uses GMT+5:30 (UTC+5:30). This difference varies seasonally due to Daylight Saving Time, ranging from 4.5 hours ahead to 5.5 hours ahead.
When it's noon in London, what time is it in Kolkata?
When it's 12:00 PM (noon) in London, it is 5:30 PM in Kolkata. Use our calculator above to convert any other time.
Does the time difference between London and Kolkata change?
Yes, the time difference changes throughout the year. Because London observes Daylight Saving Time, the offset shifts between 4.5 hours ahead and 5.5 hours ahead at different times of the year.
What are the best times to schedule a call between London and Kolkata?
The best time to call is between 9:00 AM and 12:00 PM in London (which is 2:30 PM – 5:30 PM in Kolkata). This 3-hour window falls within business hours in both cities.
Is London ahead or behind Kolkata?
London is currently 5.5 hours behind Kolkata.
What time zone is London in?
London is in the Europe/London time zone, currently using GMT (UTC+0). London observes Daylight Saving Time, so the offset changes twice a year.
What time is midnight in London in Kolkata?
When it is midnight (12:00 AM) in London, it is 5:30 AM in Kolkata.