NST to IRST
Convert Newfoundland Time — St. John's to Iran Time — Tehran — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in St. John's, it's 3:00 PM in Tehran. Tehran is 6 hours ahead of St. John's. Use the converter above to turn any NST time into IRST, or scan the hour-by-hour table below for the full day.
NST to IRST at a glance
Planning a meeting between St. John's and Tehran
Planning a call between St. John's and Tehran? The best overlap during a standard 9-to-5 workday runs 9:00 AM–11:00 AM NST (3:00 PM–5:00 PM IRST). Aim for that window to reach both sides during business hours.
Hour-by-hour: St. John's to Tehran
A full day mapped from NST to IRST.
Frequently asked
Is Tehran ahead of or behind St. John's?
Tehran is 6 hours ahead of St. John's.
What is 12:00 PM NST in IRST?
12:00 PM in St. John's is 6:00 PM in Tehran.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so NST and IRST automatically reflect the correct daylight-saving offset for the current date.