GMT
UTC+0
Greenwich Mean Time
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 4:30 PM in IST. This offset may change during Daylight Saving Time transitions.
All 24 Hours — GMT to IST
Click any row to see the full detail page. Current hour in GMT is highlighted.
Best Meeting Times — GMT & IST
Recommended windows where both GMT and IST participants are within working hours (8 AM–6 PM).
Tip: When scheduling between GMT and IST, aim for the “Best” windows above. These times keep both parties within normal working hours, avoiding early-morning or late-evening fatigue. Note that one of these time zones observes Daylight Saving Time — the offset may shift ±1 hour around transition dates.
Related Time Zone Conversions
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.
Live Now
GMT
UTC+1
22:33:42
Monday
IST
UTC+5:30
03:03:42
Tuesday
Right now, 10 PM GMT = 2:30 AM IST(+1 day)
Business Hours Quick Jump
Reverse Conversion
IST to GMT
India Standard Time → Greenwich Mean Time
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