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Official nameGaecheonjeol
Also calledNational Foundation Day
Observed byKoreans
(i.e South Korea, North Korea)
SignificanceCelebrates the myth of the founding of the state of Gojoseon
Date3 October
Next time3 October 2020 (2020-10-03)
Revised RomanizationGaecheonjeol

Gaecheonjeol (Korean: 개천절, hanja: 開天節) is a public holiday in South and North Korea on 3 October. Also known by the English name National Foundation Day, this holiday celebrates the legendary formation of the first Korean state of Gojoseon in 2333 BC. This date has traditionally been regarded as the date for the founding of the Korean people.

Gaecheonjeol is also recognized in North Korea, although not as a public holiday, with an annual ceremony at the Mausoleum of Tangun, the founder of Gojoseon.


Gae-cheon ("Opening of Heaven") refers to 3 October 2457 BCE, the date when Hwanung (환웅) descended from heaven to live with mankind.[1]

The harvest ceremony was celebrated in the Korean realms; Yeonggo (영고) of Buyeo; Mucheon (무천) of Yemaek; Gyeeum (계음) of Mahan and Byeonhan; Dongmaeng (동맹) of Goguryeo; and Palgwanheoi (팔관회) of Silla.

In 1909, Gaecheonjeol was established as a national holiday.[2] 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.


On 15 January, 1909, when Daejonggyo(대종교) 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.[3]

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.[4]

National Foundation Day Song[edit]

Original Daegonggyo sing this song. After the National Foundation Day becomes as a national holiday, like now. It is changed like this.[5]

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...

See also[edit]


  1. ^ 개천절(Gaecheonjeol) Encyclopedia of Korean Culture
  2. ^ 개천절(Gaecheonjeol) Doosan Encyclopedia
  3. ^ "[황규인의 잡학사전]이씨 조선보다 먼저라 고조선이 아니라고?". (in Korean). Retrieved 26 April 2019.
  4. ^ "우리나라 국가상징> 국경일/기념일". Retrieved 26 April 2019.
  5. ^ "음악대장의 밴드양성소 : 네이버 블로그". Retrieved 26 April 2019.