End of days

End of Days usually can mean:
End times in eschatology and religion.

"End of Days" has also been the title of a number of movies and television episodes:
End of Days (1999 movie), starring Arnold Schwarzenegger and directed by Peter Hyams
"End of Days" (Buffy episode), a season 7 episode of Buffy the Vampire Slayer
"End of Days" (Torchwood), a series 1 episode of Torchwood