奥陶紀
  おうとうき
  noun (common) (futsuumeishi)
  see: オルドビス紀
  obscure term
  Ordovician period
  ◄ ►
  桜桃忌
  おうとうき
  noun (common) (futsuumeishi)
  [太宰治]
  anniversary that celebrates author Dazai Osamu's birthday, and incidentally, the day his body was found after he was involved in a double suicide
  ◄ ►