太たい陽よう節せつMeanings1nounDay of the SuneventAnnual public holiday in North Korea on 15 April, celebrating the birth of Kim Il-sung.北きた朝ちょう鮮せんでは4月がつ15日にちは太たい陽よう節せつとして祝いわわれる。In North Korea, April 15th is celebrated as the Day of the Sun.