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