GMT to GST Converter
GST is 4 hours ahead of GMT.
GMT
Thursday, October 1, 2026
Greenwich Mean Time · UTC+0
GST
Thursday, October 1, 2026
Gulf Standard Time · UTC+4
Convert GMT to GST
GMT 19:00 = GST 23:00
GMT to GST time chart, hour by hour
| GMT | GST |
|---|
| 00:00 | 04:00 |
| 01:00 | 05:00 |
| 02:00 | 06:00 |
| 03:00 | 07:00 |
| 04:00 | 08:00 |
| 05:00 | 09:00 |
| 06:00 | 10:00 |
| 07:00 | 11:00 |
| 08:00 | 12:00 |
| 09:00 | 13:00 |
| 10:00 | 14:00 |
| 11:00 | 15:00 |
| 12:00 | 16:00 |
| 13:00 | 17:00 |
| 14:00 | 18:00 |
| 15:00 | 19:00 |
| 16:00 | 20:00 |
| 17:00 | 21:00 |
| 18:00 | 22:00 |
| 19:00 | 23:00 |
| 20:00 | 00:00 +1 day |
| 21:00 | 01:00 +1 day |
| 22:00 | 02:00 +1 day |
| 23:00 | 03:00 +1 day |
Highlighted rows fall within 09:00–18:00 in both places: 5 shared working hours.
How many hours is GMT behind GST?
As abbreviations, GST is always 4 hours ahead of GMT: GMT is UTC+0 and GST is UTC+4. To convert, add 4 hours.
Does the GMT to GST time difference change?
No. Gst is 4 hours ahead of gmt all year, because neither place changes its clocks.
Calling hours for GMT and GST
- When GST is 4 hours ahead of GMT: 4 shared office hours, 09:00 to 13:00 in GMT (13:00 to 17:00 in GST).
Frequently asked questions about GMT and GST time
How many hours ahead is GST of GMT?
GST (UTC+4) is 4 hours ahead of GMT (UTC+0).
Does the time difference between GMT and GST change during the year?
No, it stays 4 hours ahead all year because neither place changes its clocks.