SGT to IRST
Convert Singapore Time to Iran Time — Tehran — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Singapore, it's 4:30 AM in Tehran. Tehran is 4½ hours behind Singapore. Use the converter above to turn any SGT time into IRST, or scan the hour-by-hour table below for the full day.
SGT to IRST at a glance
Planning a meeting between Singapore and Tehran
Planning a call between Singapore and Tehran? The best overlap during a standard 9-to-5 workday runs 1:30 PM–5:00 PM SGT (9:00 AM–12:30 PM IRST). Aim for that window to reach both sides during business hours.
Hour-by-hour: Singapore to Tehran
A full day mapped from SGT to IRST.
Frequently asked
Is Tehran ahead of or behind Singapore?
Tehran is 4½ hours behind Singapore.
What is 12:00 PM SGT in IRST?
12:00 PM in Singapore is 7:30 AM in Tehran.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so SGT and IRST automatically reflect the correct daylight-saving offset for the current date.