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

GMT to MUMBAI Time Converter

Q: Where is mumbai used?

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

Greenwich Mean Time → MUMBAI (Kolkata)

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

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

Mumbai

India · +4.5h

13:30

New York

USA · -5h

04:00

Tokyo

Japan · +8h

17:00

Dubai

United Arab Emirates · +3h

12:00

Sydney

Australia · +9h

18:00

GMT (London) to Mumbai — exact time difference

GMT (London) is 5 hours 30 minutes behind Mumbai. At noon in GMT (London), your contact in Mumbai sees 16:00.

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

Working hours overlap

GMT (London) and Mumbai share 3.5 hours of overlapping business hours daily — enough for real-time collaboration without anyone joining at odd hours.

00:0006:0012:0018:0024:00

GMT (London)

Mumbai

Overlap (3.5h)

Meeting time recommendations

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

09:00 London / 13:00 Mumbai✓ Both working

10:00 London / 14:00 Mumbai✓ Both working

11:00 London / 15:00 Mumbai✓ Both working

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

Public holidays for both locations

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

No upcoming public holidays this year.

Scheduling between GMT (London) and Mumbai

Teams in GMT (London) (United Kingdom) and Mumbai (India) 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.

💡 Scheduling tips for these locations

✅

Schedule at 09:00–10:00 (GMT (London)) for a 13:00–14:00 slot in Mumbai — the sweet spot where both teams are working.

✅

Schedule at 10:00–11:00 (GMT (London)) for a 14:00–15:00 slot in Mumbai — the sweet spot where both teams are working.

✅

Schedule at 11:00–12:00 (GMT (London)) for a 15:00–16:00 slot in Mumbai — 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 GMT (London) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.

GMT (London) ↔ MUMBAI (Mumbai)

4h of business hours overlap daily (09:00–17:00)

GMT (London)

MUMBAI (Mumbai)

00:00

04:30

01:00

05:30

02:00

06:30

03:00

07:30

04:00

08:30

05:00

09:30Working

06:00

10:30Working

07:00

11:30Working

08:00

12:30Working

09:00Working

13:30Working

10:00Working

14:30Working

11:00Working

15:30Working

12:00Working

16:30Working

13:00Working

17:30off

14:00Working

18:30off

15:00Working

19:30off

16:00Working

20:30off

17:00

21:30

18:00

22:30

19:00

23:30

20:00

00:30+1d

21:00

01:30+1d

22:00

02:30+1d

23:00

03:30+1d

Working hours: 09:00–17:00 local. Green = both working. Purple = one side only.

Frequently Asked Questions

What is the difference between gmt and mumbai?

Greenwich Mean Time (gmt) is UTC+1 and MUMBAI (Kolkata) (mumbai) is UTC+5:30. The difference between them is 4.5 hours.

Where is gmt used?

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

Where is mumbai used?

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

How do I convert gmt to mumbai?

Use the interactive converter above. Drag the time slider to any gmt time and the mumbai equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.

Popular GMT conversions

GMT → New York GMT → Tokyo GMT → Dubai GMT → Sydney GMT → Paris GMT → Berlin GMT → Singapore GMT → Los Angeles GMT → Toronto GMT → Mumbai

Popular MUMBAI conversions

London → MUMBAI New York → MUMBAI Tokyo → MUMBAI Dubai → MUMBAI Sydney → MUMBAI Paris → MUMBAI Berlin → MUMBAI Singapore → MUMBAI Los Angeles → MUMBAI Toronto → MUMBAI