Greenwich Mean Time (gmt) is used in United Kingdom. The IANA timezone identifier is Europe/London.

MUMBAI to GMT Time Converter

Q: Where is mumbai used?

MUMBAI (Kolkata) (mumbai) is used in India. The IANA timezone identifier is Asia/Kolkata.

MUMBAI (Kolkata) → Greenwich Mean Time

MUMBAI = UTC+5:30GMT = UTC+1

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

GMT (London)

United Kingdom · -4.5h

04:30

New York

USA · -9.5h

23:30-1 day

Tokyo

Japan · +3.5h

12:30

Dubai

United Arab Emirates · -1.5h

07:30

Sydney

Australia · +4.5h

13:30

Mumbai to GMT (London) — exact time difference

Mumbai is 4 hours 30 minutes ahead of GMT (London). When it's noon in Mumbai, it's 07:00 in GMT (London).

Mumbai observes Asia/Kolkata and GMT (London) observes Europe/London — a 4.5 hours 30 minutes gap between them.

Working hours overlap

Both Mumbai and GMT (London) are simultaneously in business hours for 3.5 hours per day (assuming standard 9:00–17:00 working hours).

00:0006:0012:0018:0024:00

Mumbai

GMT (London)

Overlap (3.5h)

Meeting time recommendations

Mumbai and GMT (London) share 3.5 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.

14:00 Mumbai / 09:00 London✓ Both working

15:00 Mumbai / 10:00 London✓ Both working

16:00 Mumbai / 11:00 London✓ Both working

Assumes a standard 9 AM–5 PM workday in each location's local timezone.

Public holidays this year

Mumbai

No upcoming public holidays this year.

GMT (London)6 holidays

Jul 13Battle of the Boyne

Aug 3Summer Bank Holiday

Aug 31Summer Bank Holiday

Nov 30Saint Andrew's Day

Dec 25Christmas Day

Mumbai and GMT (London) — practical scheduling

Teams in Mumbai (India) and GMT (London) (United Kingdom) face a 4.5-hour time difference day to day. A 3.5-hour shared business hours window makes real-time meetings feasible for both sides within their normal working day.

💡 Practical scheduling guidelines

✅

Schedule at 14:00–15:00 (Mumbai) for a 09:00–10:00 slot in GMT (London) — the sweet spot where both teams are working.

✅

Schedule at 15:00–16:00 (Mumbai) for a 10:00–11:00 slot in GMT (London) — the sweet spot where both teams are working.

✅

Schedule at 16:00–17:00 (Mumbai) for a 11:00–12:00 slot in GMT (London) — the sweet spot where both teams are working.

Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.

Install ClockinSync Free →

Drag the slider at the top to convert any Mumbai time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

MUMBAI (Mumbai) ↔ GMT (London)

3h of business hours overlap daily (09:00–17:00)

MUMBAI (Mumbai)

GMT (London)