Doodlewatch

Hangul Day – also called Hangul Proclamation Day or Korean Alphabet Day – is a Korean national commemorative day marking the invention and the proclamation of hangul (??), the native alphabet of the Korean language, by King Sejong the Great. It is observed on October 9 in South Korea and on January 15 in North Korea. In North Korea the day is called Choson’gul Day.

In 1931, the celebration of the day was switched to October 29 of the Gregorian calendar. In 1934, arose the claim that they must assume that the Julian calendar was used in 1446, so the date was again changed to October 28.

Hunmin Jeongeum EonhaeThe discovery in 1940 of an original copy of the Hunmin Jeongeum Haerye, a volume of commentary to the Hunmin Jeongeum that appeared not long after the document it commented upon, revealed that the Hunmin Jeongeum was announced during the first ten days (sangsun; ??; ??) of the ninth month. The tenth day of the ninth month of 1446 of the lunar calendar in 1446 was equivalent to October 9 of the Julian calendar. After the South Korean government was established in 1945, Hangul Day was declared as a legal holiday to be marked on October 9, on which governmental workers are excused from work.

• http://en.wikipedia.org/wiki/Hangul_Day