IRST to ICT
Convert Iran Time — Tehran to Indochina Time — Hanoi — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Tehran, it's 12:30 PM in Hanoi. Hanoi is 3½ hours ahead of Tehran. Use the converter above to turn any IRST time into ICT, or scan the hour-by-hour table below for the full day.
IRST to ICT at a glance
Planning a meeting between Tehran and Hanoi
Planning a call between Tehran and Hanoi? The best overlap during a standard 9-to-5 workday runs 9:00 AM–1:30 PM IRST (12:30 PM–5:00 PM ICT). Aim for that window to reach both sides during business hours.
Hour-by-hour: Tehran to Hanoi
A full day mapped from IRST to ICT.
Frequently asked
Is Hanoi ahead of or behind Tehran?
Hanoi is 3½ hours ahead of Tehran.
What is 12:00 PM IRST in ICT?
12:00 PM in Tehran is 3:30 PM in Hanoi.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so IRST and ICT automatically reflect the correct daylight-saving offset for the current date.