This is why christians kill me - didn't the man himself (Jesus) say "the day of judgement is known not by anyone, not even the son, but only the father"? They don't even listen to their own bullshit.
Not all Christians are like this. I grew up religiously, (even though I don't really go to church much anymore), but I don't believe anyone can predict the world. I think God is the only one who knows when the end of times will be, doesn't that say so in the bible?