time difference · live
London to Mumbai
+4.5h or +5.5h ahead in Mumbai. UK-India outsourcing standard.
GMT/BST ↔ IST
DST aware
business overlap chart
London
--:--
Mumbai
--:--
Business hours overlap (24h)
Top row: working hours (09:00–17:00) in London. Bottom row: working hours in Mumbai. Highlighted columns are when both cities are in business hours simultaneously.
UTC →
00
01
02
03
04
05
06
07
08
09
10
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12
13
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17
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London
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
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17
18
19
20
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23
Mumbai
04
05
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09
10
11
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13
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17
18
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20
21
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23
00
01
02
03
off-hours
one city working
both cities working
Why this pair matters
UK-India outsourcing standard. Half-hour offset (Mumbai is :30) catches people off-guard. Mumbai 09:00 IST = London 03:30/04:30 GMT. Standard daily standup: 13:00 IST = 08:30 BST.
DST & offset notes
| Period | London (GMT/BST) | Mumbai (IST) | Difference |
|---|---|---|---|
| Standard time (winter) | GMT | IST | 4h offset |
| Daylight saving (summer) | BST | IST | ~4h offset (varies during DST handover) |
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Related city pairs
new york → mumbai · san francisco → london · london → paris · london → sydney