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- Number of holidays
- 3
- Day of the year
- 264
- Days left in the year
- 101
All South Korea holidays on September 21
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International holidays on September 21
- International
- Argentina
- Australia
- Belgium
- Brazil
- Canada
- Chile
- China
- Colombia
- Cuba
- England
- France
- Germany
- Honduras
- India
- Iran
- Ireland
- Israel
- Italy
- Japan
- Malaysia
- Mexico
- Nepal
- New Zealand
- Norway
- Philippines
- Puerto Rico
- Romania
- Russia
- South Africa
- South Korea
- Spain
- Sweden
- Thailand
- U.K.
- United Kingdom
- United States
- Uruguay
- Wales
- scotland