First weekday
Monday
Last weekday
Tuesday
September 2025 in South Korea has 30 days, begins on Monday, ends on Tuesday, and includes 4 local holidays.
Online calendar
View the full September 2025 calendar for South Korea with local holidays, month facts, and quick links to nearby dates.
South Korea time
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South Korea September 2025 Calendar
First weekday
Monday
Last weekday
Tuesday
September 2025 in South Korea has 30 days, begins on Monday, ends on Tuesday, and includes 4 local holidays.