GMT to GST Converter
GST is 4 hours ahead of GMT. 9:00 AM GMT = 1:00 PM GST.
GST is 4 hours ahead of GMT. To convert GMT to GST, add 4 hours to the GMT time: 9:00 AM GMT = 1:00 PM GST.
GMT (GMT) is used in Same offset as UTC. The UK and Ireland use GMT in winter; Iceland, Ghana and Senegal all year. GST (Gulf Time) is used in United Arab Emirates and Oman.
The UK is on GMT only in winter; in summer it uses BST (UTC+1).
GMT to GST time conversion table
GMT to GST on 6 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GMT | GST | Day |
|---|---|---|
| 12:00 AM GMT | 4:00 AM GST | night |
| 1:00 AM GMT | 5:00 AM GST | night |
| 2:00 AM GMT | 6:00 AM GST | — |
| 3:00 AM GMT | 7:00 AM GST | — |
| 4:00 AM GMT | 8:00 AM GST | — |
| 5:00 AM GMT | 9:00 AM GST | — |
| 6:00 AM GMT | 10:00 AM GST | — |
| 7:00 AM GMT | 11:00 AM GST | — |
| 8:00 AM GMT | 12:00 PM GST | — |
| 9:00 AM GMT | 1:00 PM GST | work hours |
| 10:00 AM GMT | 2:00 PM GST | work hours |
| 11:00 AM GMT | 3:00 PM GST | work hours |
| 12:00 PM GMT | 4:00 PM GST | work hours |
| 1:00 PM GMT | 5:00 PM GST | — |
| 2:00 PM GMT | 6:00 PM GST | — |
| 3:00 PM GMT | 7:00 PM GST | — |
| 4:00 PM GMT | 8:00 PM GST | — |
| 5:00 PM GMT | 9:00 PM GST | — |
| 6:00 PM GMT | 10:00 PM GST | night |
| 7:00 PM GMT | 11:00 PM GST | night |
| 8:00 PM GMT | 12:00 AM GST | next day |
| 9:00 PM GMT | 1:00 AM GST | next day |
| 10:00 PM GMT | 2:00 AM GST | next day |
| 11:00 PM GMT | 3:00 AM GST | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert GMT to GST
Add 4 hours to the GMT time to get GST.
Example: 9:00 AM GMT = 1:00 PM GST.
Across midnight: 10:00 PM GMT = 2:00 AM GST (next day). The date changes, so always check the day as well as the hour.
Time difference between GMT and GST
The time difference between GMT and GST is 4 hours all year – GST is ahead of GMT.
GMT and GST during daylight saving time
- GMT does not observe daylight saving time; it stays on UTC+0 all year.
- GST does not observe daylight saving time; it stays on UTC+4 all year.
Best time for a meeting between GMT and GST
GMT and GST share 4 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:00 PM GMT lands between 1:00 PM and 5:00 PM GST, inside working hours for both.
GMT to GST FAQ
What is the time difference between GMT and GST?
GST is 4 hours ahead of GMT all year. 9:00 AM GMT = 1:00 PM GST.
What is 9 AM GMT in GST?
9:00 AM GMT is 1:00 PM GST.
What is 12 PM (noon) GMT in GST?
12:00 PM GMT is 4:00 PM GST.
Is GST ahead of or behind GMT?
GST is 4 hours ahead of GMT, so it is later in GST than in GMT.
Does GMT change for daylight saving time?
No. GMT stays on the same offset all year, so conversions never shift for daylight saving time.
Does GST change for daylight saving time?
No. GST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between GMT and GST?
GMT and GST share 4 hours of the 9 AM–5 PM working day. Any time between 9:00 AM and 1:00 PM GMT lands between 1:00 PM and 5:00 PM GST, inside working hours for both.
Related conversions
Convert GST to GMT
Convert GMT to other time zones
Convert other time zones to GST
Learn more
Updated 6 November 2026. Time zone data: IANA tz database.