A bit of caution:
“But of that day and hour no one knows, neither the angels of heaven, nor the Son, but the Father alone. For as it was in the days of Noah, so it will be at the coming of the Son of Man. In (those) days before the flood, they were eating and drinking, marrying and giving in marriage, up to the day that Noah entered the ark. They did not know until the flood came and carried them all away. So will it be (also) at the coming of the Son of Man…” – Matthew 24:36-39
Anyone ever trying to sell an end of the world story is lying. Period. No one can ever know this bit of information.
Naturally, because a few misguided people are claiming that today is the day, lots of people are trying to make it out as a Christian thing. As if Christians, in general, believe this to be the case. The work of a few fools is being used to ridicule the faith.
Of course, one thing which can happen literally at any moment is your own death. You do not know if you’ll be alive even to read the end of this post…so, be prepared. Do not wait until tomorrow to make your peace with God. The only time you have is right now, this very moment. Make the most of it.
UPDATE: The Anchoress has a Rapture Roundup