GST to BST Converter
GMT is 4 hours behind GST. 9:00 AM GST = 5:00 AM GMT.
GMT is 4 hours behind GST at the moment. To convert GST to BST, subtract 4 hours from the GST time: 9:00 AM GST = 5:00 AM GMT.
GST (Gulf Time) is used in United Arab Emirates and Oman. BST (British Time) is used in United Kingdom from late March to late October.
BST here means British Summer Time, not Bangladesh Standard Time. BST (British Summer Time) is not in force right now: United Kingdom from late March to late October is currently on GMT. This page uses whichever name applies on the date you pick, so the numbers below say GMT.
GST to BST time conversion table
GST to BST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| GST | BST | Day |
|---|---|---|
| 12:00 AM GST | 8:00 PM GMT | previous day |
| 1:00 AM GST | 9:00 PM GMT | previous day |
| 2:00 AM GST | 10:00 PM GMT | previous day |
| 3:00 AM GST | 11:00 PM GMT | previous day |
| 4:00 AM GST | 12:00 AM GMT | night |
| 5:00 AM GST | 1:00 AM GMT | night |
| 6:00 AM GST | 2:00 AM GMT | night |
| 7:00 AM GST | 3:00 AM GMT | night |
| 8:00 AM GST | 4:00 AM GMT | night |
| 9:00 AM GST | 5:00 AM GMT | night |
| 10:00 AM GST | 6:00 AM GMT | — |
| 11:00 AM GST | 7:00 AM GMT | — |
| 12:00 PM GST | 8:00 AM GMT | — |
| 1:00 PM GST | 9:00 AM GMT | work hours |
| 2:00 PM GST | 10:00 AM GMT | work hours |
| 3:00 PM GST | 11:00 AM GMT | work hours |
| 4:00 PM GST | 12:00 PM GMT | work hours |
| 5:00 PM GST | 1:00 PM GMT | — |
| 6:00 PM GST | 2:00 PM GMT | — |
| 7:00 PM GST | 3:00 PM GMT | — |
| 8:00 PM GST | 4:00 PM GMT | — |
| 9:00 PM GST | 5:00 PM GMT | — |
| 10:00 PM GST | 6:00 PM GMT | — |
| 11:00 PM GST | 7:00 PM GMT | — |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert GST to BST
Subtract 4 hours from the GST time to get BST.
Example: 9:00 AM GST = 5:00 AM GMT.
Across midnight: 1:00 AM GST = 9:00 PM GMT (previous day). The date changes, so always check the day as well as the hour.
Time difference between GST and BST
The time difference between GST and BST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 1 Jan 2026 – 28 Mar 2026: BST is 4 hours behind of GST.
- 29 Mar 2026 – 24 Oct 2026: BST is 3 hours behind of GST.
- 25 Oct 2026 – 31 Dec 2026: BST is 4 hours behind of GST.
GST and BST during daylight saving time
- GST does not observe daylight saving time; it stays on UTC+4 all year.
- BST next changes on 28 Mar 2027: clocks go forward one hour at 00:59 local time, from GMT (UTC+0) to BST (UTC+1).
Best time for a meeting between GST and BST
GST and BST share 4 hours of the 9 AM–5 PM working day. Any time between 1:00 PM and 5:00 PM GST lands between 9:00 AM and 1:00 PM GMT, inside working hours for both.
GST to BST FAQ
What is the time difference between GST and BST?
Right now GMT is 4 hours behind GST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM GST in BST?
9:00 AM GST is 5:00 AM GMT.
What is 12 PM (noon) GST in BST?
12:00 PM GST is 8:00 AM GMT.
Is BST ahead of or behind GST?
GMT is 4 hours behind GST, so it is earlier in BST than in GST.
Does GST change for daylight saving time?
No. GST stays on the same offset all year, so conversions never shift for daylight saving time.
Does BST change for daylight saving time?
Yes. BST next changes on 28 Mar 2027, when clocks go forward one hour from GMT to BST.
What is the best time for a meeting between GST and BST?
GST and BST share 4 hours of the 9 AM–5 PM working day. Any time between 1:00 PM and 5:00 PM GST lands between 9:00 AM and 1:00 PM GMT, inside working hours for both.
Related conversions
Convert BST to GST
Convert GST to other time zones
Convert other time zones to BST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.