The anniversary of his death, 22 November (the date is based on the old calendar and was kept even after the introduction of the modern calendar in the Meiji era), is called CHIKAMATSU mourning, Sorinshi mourning, or Sorin mourning (Sorinshi and Sorin were his pen names) and these terms are used as seasonal words of winter in haiku poetry.
忌日の11月22日（明治以降は新暦で行われる）は近松忌、巣林子忌、または巣林忌と呼ばれ、冬の季語である。