Clockjumper

Timezone conversion

IST to London Time — Convert India Standard Time to London

London is currently 4h30m behind IST. The gap shifts across the year: around January it is 5h30m behind IST, and around July it is 4h30m behind IST, because one or both zones observe daylight saving.

London is currently 4h30m behind IST.

IST • GMT+5:30 (UTC+5:30)
10:51 PM
Wednesday, Jul 8
London • BST (UTC+1)
6:21 PM
Wednesday, Jul 8

Abbreviation disambiguation

IST here means India Standard Time. Note: major collisions: Israel Standard Time (Asia/Jerusalem), Irish Standard Time (Europe/Dublin) — canonical=India, page must disambiguate

Interactive converter

12:00PM

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Full IST to London conversion table

ISTLondon
12:00 AM7:30 PM(previous day)
1:00 AM8:30 PM(previous day)
2:00 AM9:30 PM(previous day)
3:00 AM10:30 PM(previous day)
4:00 AM11:30 PM(previous day)
5:00 AM12:30 AM
6:00 AM1:30 AM
7:00 AM2:30 AM
8:00 AM3:30 AM
9:00 AM4:30 AM
10:00 AM5:30 AM
11:00 AM6:30 AM
12:00 PM7:30 AM
1:00 PM8:30 AM
2:00 PM9:30 AM
3:00 PM10:30 AM
4:00 PM11:30 AM
5:00 PM12:30 PM
6:00 PM1:30 PM
7:00 PM2:30 PM
8:00 PM3:30 PM
9:00 PM4:30 PM
10:00 PM5:30 PM
11:00 PM6:30 PM

Daylight saving and how the gap changes

Around January the IST → London offset is 5h30m behind IST. Around July it is 4h30m behind IST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is London ahead of or behind IST right now?
London is currently 4h30m behind IST.
What is the current IST to London time difference?
Right now the gap is 4h30m behind — London is 4h30m behind IST.
Does the IST → London offset change during the year?
Yes. Around January the offset is 5h30m behind IST; around July it is 4h30m behind IST. The converter above always reflects the correct offset for the date you pick.
Does IST observe daylight saving time?
No — India Standard Time stays at a fixed UTC offset year-round.
Does London observe daylight saving time?
Yes — London observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
What time is 9 AM IST in London?
9:00 AM IST is 4:30 AM London.
What time is 12 PM (noon) IST in London?
12:00 PM IST is 7:30 AM London.
What time is 5 PM IST in London?
5:00 PM IST is 12:30 PM London.
When is the best time to schedule a call between IST and London?
The working-hours overlap (09:00–17:00 in both zones) runs roughly 1:30 PM – 5:00 PM IST (≈ 3.5 hours). Mid-morning IST is usually the safest window for a live call.
What time zone does IST refer to?
IST refers to India Standard Time (IANA: Asia/Kolkata).
What time zone does London refer to?
London uses the Europe/London time zone.
Is IST on this page the same as other zones that share the letters "IST"?
On Clockjumper, IST means India Standard Time. Disambiguation: major collisions: Israel Standard Time (Asia/Jerusalem), Irish Standard Time (Europe/Dublin) — canonical=India, page must disambiguate

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