Highlighted rows fall within 09:00–18:00 in both places: 5 shared working hours.
Clock changes in London and Mumbai
London
British Summer Time (BST)
Next clock change Sun 25 Oct 2026 (UTC+1 → UTC+0)
Mumbai
India Standard Time (IST)
No daylight saving time.
Time difference between London and Mumbai today
Today Mumbai is 4.5 hours ahead of London. When it is 09:00 in London, it is 13:30 in Mumbai. London is on British Summer Time (BST); Mumbai is on India Standard Time (IST).
When the London to Mumbai time difference changes
For most of the year Mumbai is 4.5 hours ahead of London. From 25 October to 31 December 2026, Mumbai is 5.5 hours ahead of London instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Mumbai vs London
Length
29 March 2026 to 24 October 2026
4.5 hours ahead
210 days
25 October 2026 to 31 December 2026
5.5 hours ahead
68 days
1 January 2027 to 27 March 2027
5.5 hours ahead
86 days
28 March 2027 to 30 October 2027
4.5 hours ahead
217 days
31 October 2027 to 31 December 2027
5.5 hours ahead
62 days
Best time for a meeting between London and Mumbai
When Mumbai is 4.5 hours ahead of London: 4 shared office hours, 09:00 to 13:00 in London (13:30 to 17:30 in Mumbai).
When Mumbai is 5.5 hours ahead of London: 3 shared office hours, 09:00 to 12:00 in London (14:30 to 17:30 in Mumbai).
Frequently asked questions about London and Mumbai time
What time is it in Mumbai when it is 9:00 AM in London?
13:30 today; Mumbai is 4.5 hours ahead of London.
Does the time difference between London and Mumbai change?
Yes. It is usually 4.5 hours ahead, but changes when one side moves its clocks: 5.5 hours ahead from 25 October to 31 December 2026; 5.5 hours ahead from 1 January to 27 March 2027.