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