South Korea is 5 hours 30 minutes ahead of Iran. Midday in South Korea lines up with 06:00 in Iran.
South Korea observes Asia/Seoul and Iran observes Asia/Tehran — a 5.5 hours 30 minutes gap between them.
Working hours overlap
There is a 2.5-hour window each day where both South Korea and Iran are within standard business hours (09:00–17:00).
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South Korea
Iran
Overlap (2.5h)
Optimal meeting slots
South Korea and Iran share 2.5 hours of business hours overlap daily.
15:00 Seoul / 09:00 Tehran✓ Both working
16:00 Seoul / 10:00 Tehran✓ Both working
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Upcoming public holidays
South Korea7 holidays
Aug 15Liberation Day
Sep 24Chuseok
Sep 25Chuseok
Sep 26Chuseok
Oct 3National Foundation Day
Iran
No upcoming public holidays this year.
How to work with South Korea and Iran time zones
Coordinating between South Korea (South Korea) and Iran (Iran) means working around a 5.5-hour time difference. The 2.5-hour overlap window gives both teams a natural slot for real-time collaboration without anyone working outside normal hours.
💡 How to schedule across these time zones
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Schedule at 15:00–16:00 (South Korea) for a 09:00–10:00 slot in Iran — the sweet spot where both teams are working.
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Schedule at 16:00–17:00 (South Korea) for a 10:00–11:00 slot in Iran — the sweet spot where both teams are working.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any South Korea time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
