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

MUMBAI to BST Time Converter

Q: Where is mumbai used?

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

MUMBAI (Kolkata) → British Summer Time

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

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

MUMBAI → Bangladesh Standard Time (Dhaka) ↗

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

BST (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 ↔ BST (London) — time offset

Mumbai is 4 hours 30 minutes ahead of BST (London). When Mumbai clocks hit noon, BST (London) reads 07:00.

Mumbai is in the Asia/Kolkata timezone. BST (London) is in Europe/London. The difference is 4.5 hours 30 minutes.

Mutual working hours

Every working day, Mumbai and BST (London) are both in business hours for 3.5 hours simultaneously.

00:0006:0012:0018:0024:00

Mumbai

BST (London)

Overlap (3.5h)

When to schedule across time zones

Both Mumbai and BST (London) are in standard hours simultaneously for 3.5h per day. 3 recommended slots shown below.

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

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

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

Based on standard 09:00–17:00 working hours in each location's local time.

Holiday calendar for both locations

Mumbai

No upcoming public holidays this year.

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

Working across Mumbai and BST (London)

Working across Mumbai (India) and BST (London) (United Kingdom) involves a 4.5-hour gap. The good news: there is a 3.5-hour mutual window in standard business hours that lets both sides collaborate without anyone joining at an unreasonable hour.

💡 Best practice for cross-timezone meetings

✅

14:00–15:00 in Mumbai = 09:00–10:00 in BST (London). Both sides are in standard business hours during this window.

✅

15:00–16:00 in Mumbai = 10:00–11:00 in BST (London). Both sides are in standard business hours during this window.

✅

16:00–17:00 in Mumbai = 11:00–12:00 in BST (London). Both sides are in standard business hours during this window.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in Mumbai. The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

MUMBAI (Mumbai) ↔ BST (London)

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

MUMBAI (Mumbai)

BST (London)