GST to GMT: GST is 4 hours ahead of GMT
Gulf Standard Time is 4 hours ahead of Greenwich Mean Time, on every day of the year. It is 2:08 am GST in Gulf and 10:08 pm GMT in GMT, which is already the previous day there.
Convert a specific time from GST to GMT
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 GST and GMT?
Greenwich Mean Time is 4 hours behind Gulf Standard Time. To go from GST to GMT you subtract 4 hours. That gap holds on all 365 days of 2026: neither zone moves its clocks.
GST to GMT conversion table
Every hour of Friday, September 25, 2026 in Gulf, with the matching reading in GMT. 4 of the 24 hours land on a different calendar date in GMT, which is the part people get wrong when they schedule across this pair.
| GST | GST 24h | GMT | GMT 24h | Date |
|---|---|---|---|---|
| 12:00 am | 00:00 | 8:00 pm | 20:00 | the previous day |
| 1:00 am | 01:00 | 9:00 pm | 21:00 | the previous day |
| 2:00 am | 02:00 | 10:00 pm | 22:00 | the previous day |
| 3:00 am | 03:00 | 11:00 pm | 23:00 | the previous day |
| 4:00 am | 04:00 | 12:00 am | 00:00 | same day |
| 5:00 am | 05:00 | 1:00 am | 01:00 | same day |
| 6:00 am | 06:00 | 2:00 am | 02:00 | same day |
| 7:00 am | 07:00 | 3:00 am | 03:00 | same day |
| 8:00 am | 08:00 | 4:00 am | 04:00 | same day |
| 9:00 am | 09:00 | 5:00 am | 05:00 | same day |
| 10:00 am | 10:00 | 6:00 am | 06:00 | same day |
| 11:00 am | 11:00 | 7:00 am | 07:00 | same day |
| 12:00 pm | 12:00 | 8:00 am | 08:00 | same day |
| 1:00 pm | 13:00 | 9:00 am | 09:00 | same day |
| 2:00 pm | 14:00 | 10:00 am | 10:00 | same day |
| 3:00 pm | 15:00 | 11:00 am | 11:00 | same day |
| 4:00 pm | 16:00 | 12:00 pm | 12:00 | same day |
| 5:00 pm | 17:00 | 1:00 pm | 13:00 | same day |
| 6:00 pm | 18:00 | 2:00 pm | 14:00 | same day |
| 7:00 pm | 19:00 | 3:00 pm | 15:00 | same day |
| 8:00 pm | 20:00 | 4:00 pm | 16:00 | same day |
| 9:00 pm | 21:00 | 5:00 pm | 17:00 | same day |
| 10:00 pm | 22:00 | 6:00 pm | 18:00 | same day |
| 11:00 pm | 23:00 | 7:00 pm | 19:00 | same day |
What are the best hours to schedule a call between GST and GMT?
4 hours of the standard 9:00 am to 5:00 pm working day line up in both zones, from 1:00 pm GST to 5:00 pm GST. In GMT that window reads 9:00 am to 1:00 pm. Outside it, one side is either not yet at their desk or already gone.
| GST | GMT | Working hours | Note |
|---|---|---|---|
| 1:00 pm | 9:00 am | both sides | afternoon in Gulf, mid morning in GMT |
| 2:00 pm | 10:00 am | both sides | afternoon in Gulf, mid morning in GMT |
| 3:00 pm | 11:00 am | both sides | afternoon in Gulf, mid morning in GMT |
| 4:00 pm | 12:00 pm | both sides | afternoon in Gulf, noon in GMT |
Does daylight saving change GST to GMT?
Gulf Standard Time does not move its clocks at all, so its UTC+4 offset holds every day of the year.
Greenwich Mean Time does not move its clocks at all, so its UTC+0 offset holds every day of the year.
Is GST ahead of or behind GMT?
GST is ahead of GMT by 4 hours: when it is 12:00 pm in Gulf, it is 8:00 am in GMT. Neither Gulf Standard Time nor Greenwich Mean Time observes daylight saving, so the abbreviations never change and the gap between them is fixed.
Gulf Standard Time covers Dubai, Abu Dhabi and Muscat. Greenwich Mean Time covers identical to UTC as a clock reading, and a separate thing as a standard. The identifiers behind them are Asia/Dubai and Etc/GMT, which is what any calendar or scheduling system should be storing rather than a fixed number of hours.
Questions
- What is GST in GMT?
- GST is 4 hours ahead of GMT. 9:00 am GST is 5:00 am GMT.
- How many hours ahead is GMT of GST?
- GMT is 4 hours behind GST.
- What time is it in GMT right now?
- 10:08 pm GMT on Thursday, September 24, 2026.
- When can Gulf and GMT meet during working hours?
- Between 1:00 pm and 5:00 pm GST, which is 9:00 am to 1:00 pm GMT.
- Does this account for daylight saving?
- Yes. Every reading is computed from the IANA database for the actual date, so GST and GMT are the abbreviations genuinely in force today rather than a fixed assumption.
Other conversions
12 and 24 hour converter · 8 hours from now · Today · Day counter