National Foundation Day (Gaecheonjeol) is a significant holiday in South Korea, celebrated annually on October 3rd. It commemorates the legendary founding of the Korean nation in 2333 BCE by Dangun, the mythical figure believed to be the son of the heavenly prince Hwanung and a bear-turned-woman. The holiday symbolizes the beginning of Korean history and the establishment of Gojoseon, the first Korean kingdom. On this day, many South Koreans reflect on their cultural heritage, and ceremonies are held to honor the spirit of Dangun and the nation’s ancient roots.