On this point, I do not think that any massive earth changes will occur on the 2012 December Solstice. I have just finished only a few days ago completing my evaluation of the celestial pattern as event on the day in question, and I find that it does not conform to the essential science of the Music of the Spheres. And therefore the date is of no significance.
Please see the following link:
2012 Galactic Alignment Music of the Spheres
LP