GMT to IST: GMT is 5 hours 30 minutes behind IST
Greenwich Mean Time is 5 hours 30 minutes behind India Standard Time, on every day of the year. It is 8:14 pm GMT in GMT and 1:44 am IST in India, which is already the next day there.
Convert a specific time from GMT to IST
Pick any time and date to convert it both ways. The conversion runs in your browser against the real zone rules, so a date inside a daylight saving period gets that period's offset rather than today's.
What is the time difference between GMT and IST?
India Standard Time is 5 hours 30 minutes ahead of Greenwich Mean Time. To go from GMT to IST you add 5 hours 30 minutes. That gap holds on all 365 days of 2026: neither zone moves its clocks.
GMT to IST conversion table
Every hour of Wednesday, September 23, 2026 in GMT, with the matching reading in India. 5 of the 24 hours land on a different calendar date in India, which is the part people get wrong when they schedule across this pair.
| GMT | GMT 24h | IST | IST 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 5:30 am | 05:30 | same day |
| 1:00 am | 01:00 | 6:30 am | 06:30 | same day |
| 2:00 am | 02:00 | 7:30 am | 07:30 | same day |
| 3:00 am | 03:00 | 8:30 am | 08:30 | same day |
| 4:00 am | 04:00 | 9:30 am | 09:30 | same day |
| 5:00 am | 05:00 | 10:30 am | 10:30 | same day |
| 6:00 am | 06:00 | 11:30 am | 11:30 | same day |
| 7:00 am | 07:00 | 12:30 pm | 12:30 | same day |
| 8:00 am | 08:00 | 1:30 pm | 13:30 | same day |
| 9:00 am | 09:00 | 2:30 pm | 14:30 | same day |
| 10:00 am | 10:00 | 3:30 pm | 15:30 | same day |
| 11:00 am | 11:00 | 4:30 pm | 16:30 | same day |
| 12:00 pm | 12:00 | 5:30 pm | 17:30 | same day |
| 1:00 pm | 13:00 | 6:30 pm | 18:30 | same day |
| 2:00 pm | 14:00 | 7:30 pm | 19:30 | same day |
| 3:00 pm | 15:00 | 8:30 pm | 20:30 | same day |
| 4:00 pm | 16:00 | 9:30 pm | 21:30 | same day |
| 5:00 pm | 17:00 | 10:30 pm | 22:30 | same day |
| 6:00 pm | 18:00 | 11:30 pm | 23:30 | same day |
| 7:00 pm | 19:00 | 12:30 am | 00:30 | the next day |
| 8:00 pm | 20:00 | 1:30 am | 01:30 | the next day |
| 9:00 pm | 21:00 | 2:30 am | 02:30 | the next day |
| 10:00 pm | 22:00 | 3:30 am | 03:30 | the next day |
| 11:00 pm | 23:00 | 4:30 am | 04:30 | the next day |
What are the best hours to schedule a call between GMT and IST?
3 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 9:00 am GMT to 12:00 pm GMT. In India that window reads 2:30 pm to 5:30 pm. Outside it, one side is either not yet at their desk or already gone.
| GMT | IST | Working hours | Note |
|---|---|---|---|
| 9:00 am | 2:30 pm | both sides | mid morning in GMT, afternoon in India |
| 10:00 am | 3:30 pm | both sides | mid morning in GMT, afternoon in India |
| 11:00 am | 4:30 pm | both sides | mid morning in GMT, afternoon in India |
Does daylight saving change GMT to IST?
Greenwich Mean Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
India Standard Time does not move its clocks at all, so its UTC+5:30 offset holds every day of the year.
Is GMT ahead of or behind IST?
GMT is behind IST by 5 hours 30 minutes: when it is 12:00 pm in GMT, it is 5:30 pm in India. Neither Greenwich Mean Time nor India Standard Time observes daylight saving, so the abbreviations never change and the gap between them is fixed.
Greenwich Mean Time covers identical to UTC as a clock reading, and a separate thing as a standard. India Standard Time covers the whole of India on a single half hour offset. The identifiers behind them are Etc/GMT and Asia/Kolkata, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is GMT in IST?
- GMT is 5 hours 30 minutes behind IST. 9:00 am GMT is 2:30 pm IST.
- How many hours ahead is IST of GMT?
- IST is 5 hours 30 minutes ahead of GMT.
- What time is it in India right now?
- 1:44 am IST on Thursday, September 24, 2026.
- When can GMT and India meet during working hours?
- Between 9:00 am and 12:00 pm GMT, which is 2:30 pm to 5:30 pm IST.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so GMT and IST are the abbreviations genuinely in force today rather than a fixed assumption.
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