In South Korea, a fascinating celebration known as National Foundation Day commemorates the legendary founding of the Korean nation by Dangun Wanggeom over 4,300 years ago. This day, meaning "The Day the Sky Opened," is a blend of history and myth, marked by ceremonies and traditional performances that showcase Korea's rich cultural heritage.

• 대한민국 단독
• 첫 출시 2023. 9. 26.
• 9월 30 → 10월 3 매년
• https://ko.wikipedia.org/wiki/%EA%B0%9C%EC%B2%9C%EC%A0%88