旦たん暮ぼたんぼMeanings1noundawn and dusk; morning and eveningLiterary or classical term for the times of daybreak and nightfall. Not used in everyday conversation; modern Japanese prefers 明け暮れ or 朝夕.古こ典てんでは「旦たん暮ぼ」は夜よ明あけと夕ゆう暮ぐれを指さす。In classical texts, 旦暮 refers to dawn and dusk.