Gae-cheon refers to 3 October 2457 BCE, the date when Hwanung descended from heaven to live with mankind. The harvest ceremony was celebrated in the Korean realms; Yeonggo of Buyeo; Mucheon of Yemaek; Gyeeum of Mahan and Byeonhan; Dongmaeng of Goguryeo; and Palgwanheoi of Silla. In 1909, Gaecheonjeol was established as a national holiday. At first, the holiday was observed on the third day of the 10th month on the lunar calendar, but it has been fixed on 3 October of the solar Gregorian calendar since 1949.
History
On 15 January, 1909, when Daejonggyo reopened its gate with Nachul at the center, it was established as a celebration day and celebrated every year. Events like this contributed to fostering the spirit of the Korean people under the pressure of Japanese colonial rule. When the Provisional Government of the Republic of Korea was established in 1919, the provisional government established 3 October of the lunar calendar as a national holiday. This is based on the universal perception of history, which saw Dangun as the founder of the Hankyoreh at the time and Gojoseon as the first nation of the Korean people. Following the establishment of the Republic of Korea after Korea's liberation from Japanese colonial rule, the Dangun prayer, or short term, was enacted as the official link of the nation in the Act on Maritime Affairs on 25 September 1948. On 1 October 1949, the Act on National Economic Day was enacted and the date of the third lunar month was designated as the Gaecheonjeol. Since it was originally a lunar calendar, it had been used as a lunar calendar even after the establishment of the Korean government, but after the deliberation of the "Gaecheonjeol Music and Yangpower Reclamation Deliberation Council," which was appointed by the Education Ministry in 1949, it changed the lunar calendar into a solar calendar and became a great practice as it was said that the records of October 3 were precious. On the other hand, Daejonggyo believes that the original meaning of the stream is not Dangun's founding day, but the third day of the lunar month of October 2457 BC, when Hwanwoong opened the sky gate and came down below Sin Dansu, Taebaek Mountain, and began the great work of Hongik Man and Yihwa World.
National Foundation Day Song
Original Daegonggyo sing this song. After the National Foundation Day becomes as a national holiday, like now. It is changed like this. Section 1 "If we are water, we would be heart burning. If we are a tree, there is our roots. Dangun is your father of this country. Section 2 At a time of high mountain rich couple. From the sky with traces of adults. Chosa hole in the October the Harvest Month is on that day. Section 3 A long long time. even if the stems. Phil Samchully be in single tree leaves again. I well received the map orida. Maeng saeanoni...