So don’t make any plans.  And that put-off task of refinishing the deck?  Don’t bother. Seems pointless.

UPDATE:  Don’t worry.  The guy predicting this is a wacko.  He predicts the comet will hit the Earth and destroy most of it.  How does he know?  Because he "received a telepathic message from extraterrestrial friends".

Still, there really is a comet, and it will be passing close to Earth.  Here’s a more serious discussion of the phenomenon.