Is anything special going to happen on december 21st

Yes. The Solstice.

December 21st (United States) the Winter Solstice, the Shortest day of the year.

December 22nd (Australia) The Summer Solstice, the Longest day of the year.

The December solstice occurs when the sun reaches its most southerly declination of -23.5 degrees. In other words, it is when the North Pole is tilted 23.5 degrees away from the sun.

The Solstice will occur at 21 Dec 11:12 (UTC)(GMT)

My Aunty Jack, yes that's right, the one in the blue velvet dress and the boxing glove says "Read this"

http://www.2012hoax.org

If you don't she'll know. Then she will come around to your place on her vintage black 500cc Matchless motorcycle, kick the door down, rip your bloody arms off and beat you over the head with the wet ends. And she will, too.

She's such a gentle soul.

http://www.youtube.com/watch?v=vIqqiK4nc…

Like the person above said, its the shortest day of the year.Which is the winter solstice. Which occurs every year.
This makes the Summer solstice in australia, which is the longest day of the year.

I don't think so.

It will be the shortest day of the year though.

And a few days after it, we'll have a new doomsday threat announced.
Check back here on Dec 26 for the details of the new threat to planet earth.

Yes.. we will all die. it will happen, im sure of it.

Yes.

I get paid.