What's the current time difference between London and IST?

Right now, IST (IST · India Standard Time) is +4.5h relative to London (London). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the London hour lands on a different calendar day in IST, we flag it so you don't accidentally schedule a meeting on the wrong date. London 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both London and IST are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

London to IST

London ↔ IST · India Standard Time. Right now, IST is +4.5h relative to London. DST is honored live.

From

London

—

IST

—

00:00London hour of day23:30

Live offset

+4.5h

London (May 24) ↔ IST (May 24)

If London or IST just shifted for daylight saving, that's already reflected.

Best meeting overlap

9:00 AM – 12:00 PM

London time. Equivalent IST: 1:30 PM – 4:30 PM

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

London → IST, every hour

London · May 24IST · May 24

12:00 AM4:30 AM
1:00 AM5:30 AM
2:00 AM6:30 AM
3:00 AM7:30 AM
4:00 AM8:30 AM
5:00 AM9:30 AM
6:00 AM10:30 AM
7:00 AM11:30 AM
8:00 AM12:30 PM
9:00 AM1:30 PM
10:00 AM2:30 PM
11:00 AM3:30 PM
12:00 PM4:30 PM
1:00 PM5:30 PM
2:00 PM6:30 PM
3:00 PM7:30 PM
4:00 PM8:30 PM
5:00 PM9:30 PM
6:00 PM10:30 PM
7:00 PM11:30 PM
8:00 PM+1d12:30 AM
9:00 PM+1d1:30 AM
10:00 PM+1d2:30 AM
11:00 PM+1d3:30 AM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

London ↔ IST, questions answered

What's the current time difference between London and IST?: Right now, IST (IST · India Standard Time) is +4.5h relative to London (London). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the London hour lands on a different calendar day in IST, we flag it so you don't accidentally schedule a meeting on the wrong date. London 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both London and IST are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — IST to London Time in London Open in planner