What is GMT in IST?
India Standard Time is 5 hours 30 minutes ahead
Greenwich Mean Time is on UTC+0:00 and India Standard Time is on UTC+5:30 right now. That gap holds all year, because both zones change their clocks together.
- Time in Greenwich
- 1:34 am
- Time in New Delhi
- 7:04 am
- Difference
- +5:30 h
- Next clock change
- Neither zone
Convert a time
IST — India Standard Time
6:30 am
Wed
Daylight saving
Greenwich Mean Time
Greenwich Mean Time stays on GMT all year, so its offset from UTC never moves.
India Standard Time
India Standard Time stays on IST all year, so its offset from UTC never moves.
GMT to IST conversion table
Every hour of Wednesday, September 23, 2026, converted from Greenwich Mean Time to India Standard Time. 5 of the 24 hours fall on a different calendar day in New Delhi, which is marked.
- 12:00 am GMT
- 5:30 am IST
- 1:00 am GMT
- 6:30 am IST
- 2:00 am GMT
- 7:30 am IST
- 3:00 am GMT
- 8:30 am IST
- 4:00 am GMT
- 9:30 am IST
- 5:00 am GMT
- 10:30 am IST
- 6:00 am GMT
- 11:30 am IST
- 7:00 am GMT
- 12:30 pm IST
- 8:00 am GMT
- 1:30 pm IST
- 9:00 am GMT
- 2:30 pm IST
- 10:00 am GMT
- 3:30 pm IST
- 11:00 am GMT
- 4:30 pm IST
- 12:00 pm GMT
- 5:30 pm IST
- 1:00 pm GMT
- 6:30 pm IST
- 2:00 pm GMT
- 7:30 pm IST
- 3:00 pm GMT
- 8:30 pm IST
- 4:00 pm GMT
- 9:30 pm IST
- 5:00 pm GMT
- 10:30 pm IST
- 6:00 pm GMT
- 11:30 pm IST
- 7:00 pm GMT
- 12:30 am IST+1 day
- 8:00 pm GMT
- 1:30 am IST+1 day
- 9:00 pm GMT
- 2:30 am IST+1 day
- 10:00 pm GMT
- 3:30 am IST+1 day
- 11:00 pm GMT
- 4:30 am IST+1 day
Scheduling between the two
Working hours overlap from 9:00 am to 1:00 pm GMT, which is 2:30 pm to 6:30 pm IST. 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.
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.
India Standard Time (IST) is used in all of India and Sri Lanka, on a single UTC+5:30 offset with no daylight saving