Armageddon Summer — Jane Yolen; Bruce Coville

The world will end on July 27

Marina's mom is a Believer. So is Jed's dad. That's why they've dragged Marina and Jed to a mountain retreat with thee rest of Reverend Beelson's flock. From the mountaitop the Believers will watch the Righteous Conflagration that will scour the world clean--and then they will descend to begin God's world anew.

But this world has only just begun for Jed and Marina, two teenagers who aren't sure they believe in anything, let alone that everything they've ever known will soon vanish in a blaze of fire. Why should the world end now, when Marina and Jed have just fallen in love for the first time in their lives?