Time zone converter
ICT to AST
Convert Indochina Time — Hanoi to Arabia Time — Riyadh — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Hanoi, it's 5:00 AM in Riyadh. Riyadh is 4 hours behind Hanoi. Use the converter above to turn any ICT time into AST, or scan the hour-by-hour table below for the full day.
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Indochina Time — Hanoi ·
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Arabia Time — Riyadh ·
Convert a specific timein Hanoi → — in Riyadh
ICT to AST at a glance
9:00 AM ICT
5:00 AM
AST · Riyadh
12:00 PM ICT
8:00 AM
AST · Riyadh
5:00 PM ICT
1:00 PM
AST · Riyadh
Planning a meeting between Hanoi and Riyadh
Planning a call between Hanoi and Riyadh? The best overlap during a standard 9-to-5 workday runs 1:00 PM–5:00 PM ICT (9:00 AM–1:00 PM AST). Aim for that window to reach both sides during business hours.
Hour-by-hour: Hanoi to Riyadh
A full day mapped from ICT to AST.
Frequently asked
Is Riyadh ahead of or behind Hanoi?
Riyadh is 4 hours behind Hanoi.
What is 12:00 PM ICT in AST?
12:00 PM in Hanoi is 8:00 AM in Riyadh.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so ICT and AST automatically reflect the correct daylight-saving offset for the current date.