noun
1.
a. usually capitalized J&D : the day of the Last Judgment : doomsday 1
belief in … the Judgment Day at the end of the world — E.R.Pike
b. : a day of final judgment
driven Congress … for the sake of a completed record before the judgment day of election — F.L.Paxon
2. : the day fixed by statute, rule, or custom of a court on which judgments are pronounced or entered upon the court records