Timezone conversion
London to IST Time — Convert London to India Standard Time
IST is currently 4h30m ahead of London. The gap shifts across the year: around January it is 5h30m ahead of London, and around July it is 4h30m ahead of London, because one or both zones observe daylight saving.
IST is currently 4h30m ahead of London.
London • BST (UTC+1)
6:21 PM
Wednesday, Jul 8
IST • GMT+5:30 (UTC+5:30)
10:51 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 London to IST conversion table
| London | IST |
|---|---|
| 12:00 AM | 4:30 AM |
| 1:00 AM | 5:30 AM |
| 2:00 AM | 6:30 AM |
| 3:00 AM | 7:30 AM |
| 4:00 AM | 8:30 AM |
| 5:00 AM | 9:30 AM |
| 6:00 AM | 10:30 AM |
| 7:00 AM | 11:30 AM |
| 8:00 AM | 12:30 PM |
| 9:00 AM | 1:30 PM |
| 10:00 AM | 2:30 PM |
| 11:00 AM | 3:30 PM |
| 12:00 PM | 4:30 PM |
| 1:00 PM | 5:30 PM |
| 2:00 PM | 6:30 PM |
| 3:00 PM | 7:30 PM |
| 4:00 PM | 8:30 PM |
| 5:00 PM | 9:30 PM |
| 6:00 PM | 10:30 PM |
| 7:00 PM | 11:30 PM |
| 8:00 PM | 12:30 AM(next day) |
| 9:00 PM | 1:30 AM(next day) |
| 10:00 PM | 2:30 AM(next day) |
| 11:00 PM | 3:30 AM(next day) |
Daylight saving and how the gap changes
Around January the London → IST offset is 5h30m ahead of London. Around July it is 4h30m ahead of London. 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 IST ahead of or behind London right now?
- IST is currently 4h30m ahead of London.
- What is the current London to IST time difference?
- Right now the gap is 4h30m ahead — IST is 4h30m ahead of London.
- Does the London → IST offset change during the year?
- Yes. Around January the offset is 5h30m ahead of London; around July it is 4h30m ahead of London. The converter above always reflects the correct offset for the date you pick.
- Does London observe daylight saving time?
- Yes — London observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
- Does IST observe daylight saving time?
- No — India Standard Time stays at a fixed UTC offset year-round.
- What time is 9 AM London in IST?
- 9:00 AM London is 1:30 PM IST.
- What time is 12 PM (noon) London in IST?
- 12:00 PM London is 4:30 PM IST.
- What time is 5 PM London in IST?
- 5:00 PM London is 9:30 PM IST.
- When is the best time to schedule a call between London and IST?
- The working-hours overlap (09:00–17:00 in both zones) runs roughly 9:00 AM – 12:30 PM London (≈ 3.5 hours). Mid-morning London is usually the safest window for a live call.
- What time zone does London refer to?
- London uses the Europe/London time zone.
- What time zone does IST refer to?
- IST refers to India Standard Time (IANA: Asia/Kolkata).
- 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