October 12 in old lunar calendar is the anniversary of his death (currently observed according to the New calendar (solar calendar)) and is called Toseiki (Peach Green Anniversary), Shigure ki (Winter-Drizzle Anniversary), or Okina ki (Old Man's anniversary), etc.
忌日である10月12日（現在は新暦で実施される）は、桃青忌・時雨忌・翁忌などと呼ばれる。