Riyadh
Seoul
Convert AST to KST
Arabia Standard Time to Korea Standard Time — Seoul is 6 hours ahead of Riyadh
Quick Facts
Time Difference
+6 hours
AST Full Name
Arabia Standard Time
KST Full Name
Korea Standard Time
AST to KST Conversion Table
Related Conversions
About AST and KST Time Zones
AST (Arabia Standard Time) is UTC+3 and covers cities like Riyadh, Jeddah, Baghdad. KST (Korea Standard Time) is UTC+9 and covers cities like Seoul, Busan, Incheon.
When it's 12:00 PM (noon) in Riyadh (AST), it's 6:00 PM in Seoul (KST). The time difference between AST and KST is 6 hours — Seoul is ahead of Riyadh.
The best meeting window is 3:00 PM–5:00 PM AST (9:00 AM–11:00 AM KST).
Use our world clock tool to compare Riyadh and Seoul with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between AST and KST?
Seoul (KST) is 6 hours ahead of Riyadh (AST). The offset is +6 hours.
Is KST ahead or behind AST?
KST is 6 hours ahead of AST. AST is UTC+3 and KST is UTC+9.
When it's 12:00 PM in Riyadh, what time is it in Seoul?
When it's 12:00 PM (noon) in Riyadh (AST), it's 6:00 PM in Seoul (KST).
When it's 5:00 PM in Riyadh, what time is it in Seoul?
When it's 5:00 PM in Riyadh (AST), it's 11:00 PM in Seoul (KST).