Best Time to Meet: Kolkata & London
Overlapping Business Hours
3.5 hours of overlap
Kolkata: 9:00 AM - 12:30 PM
London: 4:30 AM - 8:00 AM
Use the interactive converter above to visually compare hours side-by-side.
Quick Reference
- Kolkata
- IST (GMT+5:30)
No Daylight Saving Time
- London
- BST (GMT+1)
GMT starts on Oct 25, 2026
Frequently Asked Questions
- What is the best time to schedule a meeting between Kolkata and London?
- The best meeting window is during the 3.5 hours of overlapping business hours (see recommended slots above). Use the interactive converter on this page to explore additional time slots.
- How many hours apart are Kolkata and London?
- London is 4.5 hours behind Kolkata.
- Does the overlap change with daylight saving time?
- London observes daylight saving time (GMT starts on Oct 25, 2026) but Kolkata does not, so the overlap may shift by an hour seasonally. The interactive converter on this page always reflects the current offset, even across daylight saving transition.