Time zone converter

GMT to GST

On Oct 23, 2026, Gulf Standard Time is 3 hours ahead of UK time: 9:00 AM BST is 12:00 PM GST. The gap changes during the year because of daylight saving time; the dates are below.

UK time
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Current time in UK time
Gulf Standard Time
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Current time in Gulf Standard Time
Pick a date and time to convert.

GST vs GMT over the next 12 months

PeriodGST isExample
Oct 23, 2026 to Oct 25, 20263 hours ahead9:00 AM BST = 12:00 PM GST
Oct 25, 2026 to Mar 28, 20274 hours ahead9:00 AM GMT = 1:00 PM GST
Mar 28, 2027 onwards3 hours ahead9:00 AM BST = 12:00 PM GST

GMT to GST conversion table

Every hour of a weekday around Oct 23, 2026, in both zones.

UK timeGulf Standard Time
12:00 AM4:00 AM
1:00 AM5:00 AM
2:00 AM6:00 AM
3:00 AM7:00 AM
4:00 AM8:00 AM
5:00 AM9:00 AM
6:00 AM10:00 AM
7:00 AM11:00 AM
8:00 AM12:00 PM
9:00 AM1:00 PM
10:00 AM2:00 PM
11:00 AM3:00 PM
12:00 PM4:00 PM
1:00 PM5:00 PM
2:00 PM6:00 PM
3:00 PM7:00 PM
4:00 PM8:00 PM
5:00 PM9:00 PM
6:00 PM10:00 PM
7:00 PM11:00 PM
8:00 PM12:00 AM (next day)
9:00 PM1:00 AM (next day)
10:00 PM2:00 AM (next day)
11:00 PM3:00 AM (next day)

Best time for a meeting

Normal 9-to-5 working hours overlap for 4 hours on a weekday: 9:00 AM–1:00 PM GMT, which is 1:00 PM–5:00 PM GST.

Comparing more than two places? The meeting planner lines up working hours for up to six cities.

Daylight saving time

UK time (GMT/BST)

  • Oct 25, 2026: clocks go back 1 hour at 2:00 AM (UTC+1 → UTC±0)
  • Mar 28, 2027: clocks go forward 1 hour at 1:00 AM (UTC±0 → UTC+1)

Where these clocks are used

  • UK time (GMT/BST): London, Edinburgh, Dublin and Lisbon keep the same clock. IANA zone Europe/London.
  • Gulf Standard Time (GST): Dubai, Abu Dhabi, Muscat. IANA zone Asia/Dubai.

Questions

What time is it in GST when it is 9 AM GMT?

On Oct 23, 2026, 9:00 AM BST is 12:00 PM GST. On other dates the answer can shift by an hour because of daylight saving time; the table of periods on this page gives each one.

How many hours ahead of GMT is GST?

It depends on the date. Oct 23, 2026 to Oct 25, 2026: GST is 3 hours ahead. Oct 25, 2026 to Mar 28, 2027: GST is 4 hours ahead. Mar 28, 2027 onwards: GST is 3 hours ahead.

Do GMT and GST observe daylight saving time?

UK time switches to BST (UTC+1) in summer and back to GMT (UTC±0) in winter. Gulf Standard Time stays on UTC+4 all year.

What is the best time for a meeting between GMT and GST?

Normal 9-to-5 working hours overlap for 4 hours on a weekday: 9:00 AM–1:00 PM GMT, which is 1:00 PM–5:00 PM GST.

Scheduling across time zones? Share one Caly booking link and every guest sees your free times in their own zone. Try Caly free

Related conversions

Computed from the IANA time zone database on Oct 23, 2026. Live clocks and the converter use your browser's copy of the same data.