Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch

According to The Nice and Accurate Prophecies of Agnes Nutter, Witch (the world's only completely accurate book of prophecies, written in 1655, before she exploded), the world will end on a Saturday. Next Saturday, in fact. Just before dinner.
So the armies of Good and Evil are amassing, Atlantis is rising, frogs are falling, tempers are flaring. Everything appears to be going according to Divine Plan. Except a somewhat fussy angel and a fast-living demon—both of whom have lived amongst Earth's mortals since The Beginning and have grown rather fond of the lifestyle—are not actually looking forward to the coming Rapture.
And someone seems to have misplaced the Antichrist . . .

Neil Gaiman is a #1 New York Times bestselling author of books for children and adults whose award-winning titles include Norse Mythology, American Gods, The Graveyard Book, Good Omens (with Terry Pratchett), Coraline, and The Sandman graphic novels. Neil Gaiman is a Goodwill Ambassador for UNHCR and Professor in the Arts at Bard College.

"From beginning to end, GOOD OMENS is side-splittingly funny . . . a ripping good time."--Rave Reviews