X-Day

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English[edit]

English Wikipedia has an article on:
Wikipedia

Proper noun[edit]

X-Day

  1. An annual celebration in the Church of the SubGenius parody religion, falling on July 5 and commemorating the prophesied end of the world on that date in 1998, when alien beings from "Planet X" were to have invaded.

See also[edit]

Noun[edit]

X-Day (plural X-Days)

  1. Synonym of D-Day (The date of any major event planned for the future.)