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Kolkata to London Time Converter

London is 5 hours 30 minutes behind Kolkata right now. 9:00 AM in Kolkata is 3:30 AM in London.

Time now: Kolkata and London

🇮🇳 Kolkata, India4:52 AMTuesday, November 10 · UTC+05:30
🇬🇧 London, United Kingdom11:22 PMMonday, November 9 · UTC+00:00

London is 5 hours 30 minutes behind Kolkata right now. The gap is not fixed: it is 5 hours 30 minutes at some times of the year and 4 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.

Kolkata and London are about 7,963 km (4,948 miles) apart in a straight line. Right now Kolkata is on IST (UTC+05:30) and London is on GMT (UTC+00:00).

Kolkata to London conversion table

Every hour of the day, using today's time difference.

KolkataLondon
12:00 AM6:30 PMprevious day
1:00 AM7:30 PMprevious day
2:00 AM8:30 PMprevious day
3:00 AM9:30 PMprevious day
4:00 AM10:30 PMprevious day
5:00 AM11:30 PMprevious day
6:00 AM12:30 AM
7:00 AM1:30 AM
8:00 AM2:30 AM
9:00 AM3:30 AM
10:00 AM4:30 AM
11:00 AM5:30 AM
12:00 PM6:30 AM
1:00 PM7:30 AM
2:00 PM8:30 AM
3:00 PM9:30 AM
4:00 PM10:30 AM
5:00 PM11:30 AM
6:00 PM12:30 PM
7:00 PM1:30 PM
8:00 PM2:30 PM
9:00 PM3:30 PM
10:00 PM4:30 PM
11:00 PM5:30 PM

Best time to meet between Kolkata and London

Working hours overlap (9 AM – 6 PM in both places):

  • 3:00 PM – 6:00 PM Kolkata = 9:30 AM – 12:30 PM London

The time difference changes during the year because of daylight saving time, so these windows shift by an hour at other times.

Does the time difference between Kolkata and London change?

Yes. Right now London is 5 hours 30 minutes behind Kolkata. These are the dates in the next 12 months when the gap changes:

  • Sunday, 28 March 2027: London moves its clocks forward. London is 4 hours 30 minutes behind Kolkata from then (it was 5 hours 30 minutes before).
  • Sunday, 31 October 2027: London moves its clocks back. London is 5 hours 30 minutes behind Kolkata from then (it was 4 hours 30 minutes before).

Office hours in each other's time

  • 9 AM to 6 PM in Kolkata is 3:30 AM to 12:30 PM in London.
  • 9 AM to 6 PM in London is 2:30 PM to 11:30 PM in Kolkata.

Based on today's clock settings.

Frequently asked questions

What is the time difference between Kolkata and London?

London is 5 hours 30 minutes behind Kolkata right now. The gap is not fixed: it is 5 hours 30 minutes at some times of the year and 4 hours 30 minutes at others, because at least one of them changes its clocks for daylight saving time.

How do I convert Kolkata to London?

Subtract 5 hours 30 minutes from the Kolkata time to get the London time (at today's difference). 9:00 AM in Kolkata is 3:30 AM in London. Or use the converter above and pick any date and time.

What is the current time in London?

It is 11:22 PM in London on Monday, November 9 (the converter above shows it live). At the same moment it is 4:52 AM in Kolkata.

Does the time difference between Kolkata and London change during the year?

Yes. Right now London is 5 hours 30 minutes behind Kolkata. Over the next 12 months the gap changes 2 times: Sunday, 28 March 2027: London moves its clocks forward. London is 4 hours 30 minutes behind Kolkata from then (it was 5 hours 30 minutes before). Sunday, 31 October 2027: London moves its clocks back. London is 5 hours 30 minutes behind Kolkata from then (it was 4 hours 30 minutes before).

What is the best time for a meeting between Kolkata and London?

Between 9 AM and 6 PM in both places you can meet at 3:00 PM – 6:00 PM Kolkata = 9:30 AM – 12:30 PM London. Check the overlap section on this page for every option.

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Local time pages

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