London
Riyadh
Convert BST to AST
British Summer Time to Arabia Standard Time — Riyadh is 3 hours ahead of London
Quick Facts
Time Difference
+3 hours
BST Full Name
British Summer Time
AST Full Name
Arabia Standard Time
BST to AST Conversion Table
Related Conversions
About BST and AST Time Zones
BST (British Summer Time) is UTC+1 and covers cities like London, Edinburgh, Cardiff. AST (Arabia Standard Time) is UTC+3 and covers cities like Riyadh, Jeddah, Baghdad.
When it's 12:00 PM (noon) in London (BST), it's 3:00 PM in Riyadh (AST). The time difference between BST and AST is 3 hours — Riyadh is ahead of London.
With only a 2-hour difference, London and Riyadh share nearly a full business day overlap, making scheduling straightforward.
Use our world clock tool to compare London and Riyadh with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between BST and AST?
Riyadh (AST) is 3 hours ahead of London (BST). The offset is +3 hours.
Is AST ahead or behind BST?
AST is 3 hours ahead of BST. BST is UTC+0 and AST is UTC+3.
When it's 12:00 PM in London, what time is it in Riyadh?
When it's 12:00 PM (noon) in London (BST), it's 3:00 PM in Riyadh (AST).
When it's 5:00 PM in London, what time is it in Riyadh?
When it's 5:00 PM in London (BST), it's 8:00 PM in Riyadh (AST).