Riyadh
London
Convert AST to BST
Arabia Standard Time to British Summer Time — London is 2 hours behind Riyadh
Quick Facts
Time Difference
-2 hours
AST Full Name
Arabia Standard Time
BST Full Name
British Summer Time
AST to BST Conversion Table
Related Conversions
About AST and BST Time Zones
AST (Arabia Standard Time) is UTC+3 and covers cities like Riyadh, Jeddah, Baghdad. BST (British Summer Time) is UTC+1 and covers cities like London, Edinburgh, Cardiff.
When it's 12:00 PM (noon) in Riyadh (AST), it's 10:00 AM in London (BST). The time difference between AST and BST is 2 hours — London is behind Riyadh.
With only a 2-hour difference, Riyadh and London share nearly a full business day overlap, making scheduling straightforward.
Use our world clock tool to compare Riyadh and London with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between AST and BST?
London (BST) is 2 hours behind Riyadh (AST). The offset is -2 hours.
Is BST ahead or behind AST?
BST is 2 hours behind AST. AST is UTC+3 and BST is UTC+1.
When it's 12:00 PM in Riyadh, what time is it in London?
When it's 12:00 PM (noon) in Riyadh (AST), it's 10:00 AM in London (BST).
When it's 5:00 PM in Riyadh, what time is it in London?
When it's 5:00 PM in Riyadh (AST), it's 3:00 PM in London (BST).