But there's no mention that that will happen on December 21st, 2012, or that that will be the end of the earth.Revelation 6
12 I watched as he opened the sixth seal. There was a great earthquake. The sun turned black like sackcloth made of goat hair, the whole moon turned blood red, 13 and the stars in the sky fell to earth, as late figs drop from a fig tree when shaken by a strong wind. 14 The sky receded like a scroll, rolling up, and every mountain and island was removed from its place.
the Bible says no one knows the day or hour of our demise or the end of time as we know it...so, i would never presume 12/21/2012 at 11:11 am is it....it could happen before this specific minute or it could not happen for several hundred years, we don't know...
It also says in the Bible that before the destruction of mankind, Jesus will return.