名詞 crack of doom:

1. (New Testament) day of the Last Judgment when God will decree the fates of all men according to the good and evil of their earthly lives
   同義詞：Judgment Day, Judgement Day, Day of Judgment, Day of Judgement, Doomsday, Last Judgment, Last Judgement, Last Day, day of reckoning, doomsday, end of the world