BST to GST
+3hBST
BSTSOURCEGST
GSTGreen rows indicate typical business hours (9 AM - 5 PM)
BST and GST on the World Map
The map below highlights the BST (British Summer Time) and GST (Gulf Standard Time) timezone regions across the globe.
BST – British Summer Time
UTC+01:00British Summer Time (BST, UTC+01:00) is the daylight saving period in the United Kingdom, running from late March to late October.
- •BST runs from the last Sunday in March to the last Sunday in October.
- •BST is exactly one hour ahead of GMT, the UK's standard time.
- •During BST, London is 4 hours ahead of New York while the US is on Eastern Daylight Time.
- •The Isle of Man and the Channel Islands also observe BST.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
Comparing Time Zones: BST and GST
BST runs on British Summer Time (BST) at UTC+01:00. GST runs on Gulf Standard Time (GST) at UTC+04:00. That puts BST 3 hours ahead of GST — a difference of +3h at the current offsets.
In practice, when it is 9:00 AM in BST it is 12:00 PM in GST. Midnight in BST is 3:00 AM in GST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
BST to GST time conversion table
| BST (BST) | GST (GST) | Day |
|---|---|---|
| 12:00 AM | 3:00 AM | same day |
| 6:00 AM | 9:00 AM | same day |
| 7:00 AM | 10:00 AM | same day |
| 8:00 AM | 11:00 AM | same day |
| 9:00 AM | 12:00 PM | same day |
| 12:00 PM | 3:00 PM | same day |
| 3:00 PM | 6:00 PM | same day |
| 5:00 PM | 8:00 PM | same day |
| 6:00 PM | 9:00 PM | same day |
| 9:00 PM | 12:00 AM | next day |
Why people convert BST to GST time
- Scheduling a call from BST to GST: a 10:00 AM start in BST lands at 1:00 PM in GST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both BST and GST are inside the 9-to-5 working day between 9:00 AM and 2:00 PM BST time (12:00 PM–5:00 PM GST). That is roughly 5 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in BST is 11:00 PM in GST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM BST" is unambiguous; "3 PM" across a +3h gap is not.
- Block 9:00 AM–2:00 PM BST as the recurring meeting window if you work primarily from BST and need GST colleagues present.
About BST (British Summer Time)
British Summer Time (BST) is the daylight saving period in the United Kingdom, when clocks move one hour forward from Greenwich Mean Time (GMT, UTC+00:00) to UTC+01:00. It runs from the last Sunday in March to the last Sunday in October. England, Scotland, Wales and Northern Ireland all follow it, along with the Isle of Man and the Channel Islands of Jersey and Guernsey. During BST, London is one hour ahead of UTC, four hours ahead of New York on Eastern Daylight Time, and five hours ahead of New York once the United States returns to Eastern Standard Time in November. BST is also used to abbreviate Bangladesh Standard Time (UTC+06:00), which is listed separately on this site.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
Best time to call between BST and GST
Both BST and GST sit inside the 9 AM – 5 PM working day between 9:00 AM–2:00 PM BST, which is 12:00 PM–5:00 PM GST. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
BST and GST share 5 hours of working-hours overlap (9:00 AM–2:00 PM BST), so scheduling a live meeting is straightforward.
BST is 3 hours ahead of GST (BST UTC+01:00 → GST UTC+04:00). The shared working window is 9:00 AM–2:00 PM BST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
BST
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
GST
Does not observe DST
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between BST and GST?
BST (BST, UTC+01:00) is 3 hours ahead of GST (GST, UTC+04:00). The gap is currently +3h.
How do I convert BST time to GST time?
Add +3h to BST local time. For example, 9:00 AM in BST is 12:00 PM in GST.
What time is it in GST right now?
GST uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +3h offset from BST.
What is the best time to call GST from BST?
Call between 9:00 AM and 2:00 PM BST — that maps to 12:00 PM–5:00 PM GST and keeps both parties inside the working day.
Which is ahead, BST or GST?
BST is 3 hours ahead of GST. When it is 12:00 PM in BST it is 3:00 PM in GST.
Does daylight saving time affect the BST–GST difference?
Neither zone observes daylight saving time, so the +3h offset between BST and GST is fixed all year.
Which other cities share BST's time zone?
BST also covers London, Birmingham, Manchester, Glasgow, Edinburgh, Cardiff, Belfast, Liverpool and 2 more.
Which countries use BST, BST's zone?
BST is used in United Kingdom.
Is there a day difference between BST and GST?
Not normally. The +3h gap only pushes the date over for late-evening times.
What is the time difference between BST and GST?
GST is +3h from BST.
What timezone is BST in?
BST operates on its local timezone.
What timezone is GST in?
GST operates on its local timezone.
Which countries use BST (British Summer Time)?
BST is used in United Kingdom.
Does BST observe daylight saving time?
Yes, BST switches to BST during summer months.
What are some interesting facts about BST?
BST runs from the last Sunday in March to the last Sunday in October. BST is exactly one hour ahead of GMT, the UK's standard time.
Which cities are in the GST timezone?
Major cities in the GST timezone include Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
What is the UTC offset for GST?
Gulf Standard Time (GST) is at UTC+04:00.
What should I know about the GST timezone?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
When is it midnight in BST, what time is it in GST?
When it is 12:00 AM (midnight) in BST (BST), it is +3h later in GST (GST).
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