At 09:00 in London, it is already 12:00 in Dubai during summer. That three-hour gap means both cities share a full working afternoon. No other long-haul city pair offers a window this clean.
The Current Difference: 3 or 4 Hours?
Right now (29 September 2026), London is on British Summer Time (BST, UTC+1). Dubai is 3 hours ahead. When London’s workday ends at 17:00, Dubai is at 20:00.
In winter, London switches to GMT (UTC+0) and the gap widens to 4 hours. Then 09:00 London is 13:00 Dubai, and 17:00 London is 21:00 Dubai.
The difference changes twice a year, always on the last Sunday of March and October.
GMT/BST vs GST: Why Dubai Never Changes
Dubai observes Gulf Standard Time (GST, UTC+4) year-round. No daylight saving. No clock changes. The United Arab Emirates has not shifted its clocks since 1972.
London moves between GMT (UTC+0) and BST (UTC+1). The London Daylight Saving Time 2026 schedule:
| Period | London offset | Dubai offset | Difference |
|---|---|---|---|
| Late October to late March | GMT (UTC+0) | GST (UTC+4) | 4 hours |
| Late March to late October | BST (UTC+1) | GST (UTC+4) | 3 hours |
The next change happens on Sunday 25 October 2026 at 02:00 local time. Clocks go back 60 minutes to 01:00 GMT. From that morning, London is 4 hours behind Dubai again.
The Overlap: Why It Works So Well
A 3-4 hour overlap covers most of the London working day. Compare that with London vs New York (5 hours behind, overlap starts at 13:00 London) or London vs Singapore (7-8 hours ahead, overlap only in early morning). The London, Dubai corridor is unusually forgiving.
Here is what the overlap looks like during BST (3-hour gap):
- 08:00 London, 11:00 Dubai. Early London call catches Dubai before lunch.
- 10:00 London, 13:00 Dubai. Core overlap. Both cities are fully working.
- 12:00 London, 15:00 Dubai. London lunch overlaps Dubai afternoon. Good for quick catch-ups.
- 15:00 London, 18:00 Dubai. Last hour of Dubai’s standard workday. Fine for confirmations or handoffs.
- 17:00 London, 20:00 Dubai. Dubai’s evening. Many professionals are still reachable.
During GMT (4-hour gap), the window shifts slightly earlier for Dubai: 09:00 London is 13:00 Dubai, and 16:00 London is 20:00 Dubai.
Practical Decisions
Schedule meetings between 09:00 and 15:00 London time. That gives you a 6-hour window where both cities are in standard business hours. The sweet spot is 10:00-12:00 London (13:00-16:00 Dubai) during BST.
Avoid Fridays in Dubai. The UAE work week runs Monday to Friday, but Friday is a half-day (typically until 12:00 or 13:00) for many businesses. Saturday is a normal working day. Check with your Dubai counterpart.
Watch the London clock change. The March and October shifts affect your scheduled calls for one week each year. After the October change, your 15:00 London meeting becomes 19:00 Dubai instead of 18:00. The London Time FAQ has the exact dates.
Use the 24-hour clock in written scheduling. Dubai uses 24-hour notation in formal contexts. “15:00 GST” is clearer than “3 PM” and removes AM/PM confusion.
The generous overlap means you rarely need to schedule outside normal hours. That is rare for a long-haul business corridor and one reason London and Dubai are so closely linked in finance, aviation, and logistics.
What Changes Next
On Sunday 25 October 2026 at 02:00 BST, London clocks go back to 01:00 GMT. The difference with Dubai becomes 4 hours. Your 10:00 London call will now hit Dubai at 14:00 instead of 13:00. Adjust your calendar before that weekend.