Riyadh
London
Convert AST to GMT
Arabia Standard Time to Greenwich Mean Time — London is 2 hours behind Riyadh
Quick Facts
Time Difference
-2 hours
AST Full Name
Arabia Standard Time
GMT Full Name
Greenwich Mean Time
AST to GMT Conversion Table
Related Conversions
About AST and GMT Time Zones
AST (Arabia Standard Time) is UTC+3 and covers cities like Riyadh, Jeddah, Baghdad. GMT (Greenwich Mean Time) is UTC+0 and covers cities like London, Dublin, Lisbon.
When it's 12:00 PM (noon) in Riyadh (AST), it's 10:00 AM in London (GMT). The time difference between AST and GMT is 2 hours — London is behind Riyadh.
With only a 3-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 GMT?
London (GMT) is 2 hours behind Riyadh (AST). The offset is -2 hours.
Is GMT ahead or behind AST?
GMT is 2 hours behind AST. AST is UTC+3 and GMT 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 (GMT).
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 (GMT).