Sydney
Riyadh
Convert AEST to AST
Australian Eastern Standard Time to Arabia Standard Time — Riyadh is 7 hours behind Sydney
Quick Facts
Time Difference
-7 hours
AEST Full Name
Australian Eastern Standard Time
AST Full Name
Arabia Standard Time
AEST to AST Conversion Table
Related Conversions
About AEST and AST Time Zones
AEST (Australian Eastern Standard Time) is UTC+10 and covers cities like Sydney, Melbourne, Brisbane. AST (Arabia Standard Time) is UTC+3 and covers cities like Riyadh, Jeddah, Baghdad.
When it's 12:00 PM (noon) in Sydney (AEST), it's 5:00 AM in Riyadh (AST). The time difference between AEST and AST is 7 hours — Riyadh is behind Sydney.
The best meeting window is 9:00 AM–10:00 AM AEST (4:00 PM–5:00 PM AST).
Daylight Saving Time
AEST observes Daylight Saving Time and becomes AEDT (Australian Eastern Daylight Time) during summer months, shifting clocks forward by 1 hour to UTC+11.
During DST transitions, the time difference between AEST and AST may shift by ±1 hour. Always verify the current offset above for the most accurate conversion.
Use our world clock tool to compare Sydney and Riyadh with a visual timeline, or browse more timezone conversions.
Frequently Asked Questions
What is the time difference between AEST and AST?
Riyadh (AST) is 7 hours behind Sydney (AEST). The offset is -7 hours.
Is AST ahead or behind AEST?
AST is 7 hours behind AEST. AEST is UTC+10 and AST is UTC+3.
When it's 12:00 PM in Sydney, what time is it in Riyadh?
When it's 12:00 PM (noon) in Sydney (AEST), it's 5:00 AM in Riyadh (AST).
When it's 5:00 PM in Sydney, what time is it in Riyadh?
When it's 5:00 PM in Sydney (AEST), it's 10:00 AM in Riyadh (AST).
Does AEST change for Daylight Saving Time?
Yes. AEST (Australian Eastern Standard Time, UTC+10) becomes AEDT (Australian Eastern Daylight Time, UTC+11) in summer, shifting clocks forward 1 hour.