IRST to HST
Convert Iran Time — Tehran to Hawaii Time — Honolulu — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Tehran, it's 7:30 PM in Honolulu. Honolulu is 13½ hours behind Tehran. Use the converter above to turn any IRST time into HST, or scan the hour-by-hour table below for the full day.
IRST to HST at a glance
Planning a meeting between Tehran and Honolulu
Tehran and Honolulu share no standard 9-to-5 overlap, so a live call usually means one side taking an early-morning or late-evening slot. The hourly table below helps you pick the least-inconvenient time for everyone.
Hour-by-hour: Tehran to Honolulu
A full day mapped from IRST to HST.
Frequently asked
Is Honolulu ahead of or behind Tehran?
Honolulu is 13½ hours behind Tehran.
What is 12:00 PM IRST in HST?
12:00 PM in Tehran is 10:30 PM in Honolulu.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so IRST and HST automatically reflect the correct daylight-saving offset for the current date.