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DateAlmanac

What is IST in GMT?

Greenwich Mean Time is 5 hours 30 minutes behind

India Standard Time is on UTC+5:30 and Greenwich Mean Time is on UTC+0:00 right now. That gap holds all year, because neither zone observes daylight saving.

Convert a time

GMT — Greenwich Mean Time

7:30 am

GMT, Sat

Time in New Delhi
1:59:10 PM
Time in Greenwich
8:29:10 AM
Difference
−5:30 h
Next clock change
Neither zone

Daylight saving

India Standard Time

No clock changes

India Standard Time stays on IST all year, so its offset from UTC never moves.

Greenwich Mean Time

No clock changes

Greenwich Mean Time stays on GMT all year, so its offset from UTC never moves.

IST to GMT conversion table

Every hour of Saturday, November 7, 2026, converted from India Standard Time to Greenwich Mean Time. 6 of the 24 hours fall on a different calendar day in Greenwich, which is marked.

12:00 am IST
6:30 pm GMT−1 day
1:00 am IST
7:30 pm GMT−1 day
2:00 am IST
8:30 pm GMT−1 day
3:00 am IST
9:30 pm GMT−1 day
4:00 am IST
10:30 pm GMT−1 day
5:00 am IST
11:30 pm GMT−1 day
6:00 am IST
12:30 am GMT
7:00 am IST
1:30 am GMT
8:00 am IST
2:30 am GMT
9:00 am IST
3:30 am GMT
10:00 am IST
4:30 am GMT
11:00 am IST
5:30 am GMT
12:00 pm IST
6:30 am GMT
1:00 pm IST
7:30 am GMT
2:00 pm IST
8:30 am GMT
3:00 pm IST
9:30 am GMT
4:00 pm IST
10:30 am GMT
5:00 pm IST
11:30 am GMT
6:00 pm IST
12:30 pm GMT
7:00 pm IST
1:30 pm GMT
8:00 pm IST
2:30 pm GMT
9:00 pm IST
3:30 pm GMT
10:00 pm IST
4:30 pm GMT
11:00 pm IST
5:30 pm GMT

Scheduling between the two

Working hours overlap from 3:00 pm to 6:00 pm IST, which is 9:30 am to 12:30 pm GMT. Anything inside that window falls in the normal working day at both ends.

A note on IST: it can also mean Israel Standard Time (UTC+2) and Irish Standard Time (UTC+1). This page means India Standard Time, which is what almost all searches for IST want.

India Standard Time (IST) is used in all of India and Sri Lanka, on a single UTC+5:30 offset with no daylight saving

Greenwich Mean Time (GMT) is used in as a fixed UTC+0 offset. Note that the UK itself leaves GMT every summer — see British Time below.

Other conversions