British Summer Time (bst) is used in United Kingdom. The IANA timezone identifier is Europe/London.

BST to MUMBAI Time Converter

Q: Where is mumbai used?

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

British Summer Time → MUMBAI (Kolkata)

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

⚠️ BST is ambiguous — on this page it means British Summer Time. It also refers to:

Bangladesh Standard Time (Dhaka) → MUMBAI ↗

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

BST (London) vs Mumbai — time difference

BST (London) is 5 hours 30 minutes behind Mumbai. Midday in BST (London) lines up with 16:00 in Mumbai.

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

Shared working hours

There is a 3.5-hour window each day where both BST (London) and Mumbai are within standard business hours (09:00–17:00).

00:0006:0012:0018:0024:00

BST (London)

Mumbai

Overlap (3.5h)

Optimal meeting slots

BST (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.

Upcoming public holidays

BST (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.

How to work with BST (London) and Mumbai time zones

Coordinating between BST (London) (United Kingdom) and Mumbai (India) means working around a 4.5-hour time difference. The 3.5-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.

💡 How to schedule across these time zones

✅

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

✅

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

✅

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

BST (London) ↔ MUMBAI (Mumbai)

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

BST (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 bst and mumbai?

British Summer Time (bst) is UTC+1 and MUMBAI (Kolkata) (mumbai) is UTC+5:30. The difference between them is 4.5 hours.

Where is bst used?

British Summer Time (bst) is used in United Kingdom and surrounding regions. The IANA timezone identifier is Europe/London. Note: bst is ambiguous and may refer to other timezones.

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 bst to mumbai?

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

Popular BST conversions

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