What is the time difference between GMT and IST?

GMT is 5.5 hours ahead IST. GMT is UTC+0 and IST is UTC+5.5.

What is 12 PM GMT in IST?

12 PM GMT (noon) is 5:30 PM IST.

What are the best meeting times between GMT and IST?

Best overlap hours: 8 AM GMT = 1:30 PM IST; 9 AM GMT = 2:30 PM IST; 10 AM GMT = 3:30 PM IST; 11 AM GMT = 4:30 PM IST; 12 PM GMT = 5:30 PM IST.

GMT to IST Time Conversion

Greenwich Mean Time → India Standard Time

GMT

UTC+0

Greenwich Mean Time

offset

+5.5h

IST is 5.5h ahead

IST

UTC+5.5

India Standard Time

GMT observes DST — offset shifts ±1h during transitions

Greenwich Mean Time (GMT) is 5.5 hours ahead India Standard Time (IST). When it is noon in GMT, it is 5:30 PM in IST. This offset may change during Daylight Saving Time.

Meeting planner tool Reverse: IST to GMT

All 24 Hours — GMT to IST

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Both business hoursPartial overlapOff hours

12 AM6 AM12 PM6 PM11 PM

Frequently Asked Questions — GMT to IST

Greenwich Mean Time (GMT) is 5.5 hours ahead of India Standard Time (IST). GMT is UTC+0 and IST is UTC+5.5. This offset may shift by ±1 hour during Daylight Saving Time transitions.