@farmerman,
Either that, or we'll have a lot of 'rapturists' do some furious calculations to get their math right when an asteroid hits, just so they can proclaim: 'I told you so!'' while everybody is dying.
I just hope that if an asteroid strikes, it's on that exact moment of time that just DOESN'T fit in any prediction about when the world is going to end... I could truly appreciate the irony of the world ending in a massive ball of flame, with all the 'rapturists' proclaiming this can't be happening, since it's not on par with their calendar.