What is the time difference between London and Riyadh?

Riyadh (AST, UTC+3) is 3 hours ahead of London in winter (GMT, UTC+0) and 2 hours ahead in summer (BST, UTC+1). Saudi Arabia does not observe Daylight Saving Time, so the offset changes only when the UK shifts its clocks in spring and autumn.

Does Riyadh observe Daylight Saving Time?

No. Saudi Arabia does not use Daylight Saving Time. Riyadh stays on AST (UTC+3) all year. Only London shifts its clocks, which is why the London-Riyadh gap alternates between 3 and 2 hours.

When does the offset change from 3 to 2 hours?

The UK moves clocks forward on the last Sunday in March at 01:00 GMT, entering BST (UTC+1). At that point Riyadh goes from 3 hours ahead to 2 hours ahead. The gap returns to 3 hours on the last Sunday in October at 02:00 BST when the UK reverts to GMT.

What are the best meeting times for London and Riyadh?

In winter (GMT), a 09:00–15:00 London window corresponds to 12:00–18:00 in Riyadh — solid overlap. In summer (BST), a 09:00–16:00 London window corresponds to 11:00–18:00 Riyadh. Avoid scheduling after 18:00 Riyadh time as it falls outside standard business hours.

Is this tool accurate for scheduling?

Yes. It uses the IANA timezone database embedded in your browser — the same source used by operating systems and calendar apps worldwide. Accuracy depends on your device clock being synchronized via NTP, which most devices do automatically.

AST stands for Arabia Standard Time. It is UTC+3, used across Saudi Arabia (including Riyadh and Jeddah) year-round. There is no Arabia Daylight Saving Time because Saudi Arabia does not observe DST.

Time Difference: London to Riyadh

See the current time in London and Riyadh side by side, with the live UTC offset (AST is UTC+3, no DST), updated every second.

London, United Kingdom

--:--:--

GMT UTC+0

Riyadh, Saudi Arabia

--:--:--

AST UTC+3

Current Offset

+3 hours

Riyadh is 3 hours ahead of London

Meeting Overlap Finder

Business hours (09:00–18:00) highlighted — best overlap shaded

London	Riyadh	Status

Convert London Time to Riyadh Time

Based on the current offset — updates automatically

London	Riyadh

Summary

This tool displays the live current time in both London (Europe/London — GMT in winter, BST in summer) and Riyadh (Asia/Riyadh — AST, UTC+3 year-round, no DST) side by side. Riyadh never observes Daylight Saving Time, so the offset between the two cities changes twice a year: 3 hours ahead of London in winter (GMT) and 2 hours ahead in summer (BST). Use this tool to schedule calls with Saudi Arabia, coordinate remote teams, or plan travel between the UK and Riyadh.

How it works

Your browser reads the current moment from your device clock.
It converts that moment to Europe/London time using the IANA timezone database built into modern browsers.
The same moment is converted to Asia/Riyadh time (AST, UTC+3).
The UTC offsets of both cities are compared to calculate the exact hour difference.
All three values — London time, Riyadh time, and the offset — refresh every second.
When London switches between GMT and BST, the displayed offset adjusts automatically from +3 to +2 hours.

Use cases

Scheduling video calls between London and Riyadh offices.
Checking if a colleague in Riyadh is still at their desk.
Planning UK-Saudi Arabia travel and arrival time comparisons.
Remote teams coordinating daily standups across the UK and Saudi Arabia.
Finding overlapping business hours for London-Riyadh meetings.
Verifying whether London is currently on GMT or BST.
Investors monitoring London and Riyadh financial market hours.
Students and teachers arranging online lessons between the UK and Saudi Arabia.

Frequently Asked Questions

Last updated: 2026-06-11 · Reviewed by Nham Vu