Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/859884'></iframe> Download Embed Share Hangul Day AFN Humphreys Oct. 6, 2022 | 0:29 The Korean Alphabet Day, known as Hangeul Day in South Korea is a national Korean commemorative day marking the invention and proclamation of Hangul (한글), the Korean alphabet, by the 15th century Korean King Sejong the Great.