Look at the Wiki article. The cycle of that crazy thing involves 13. If I understood it right, the cycle that ends is 2012 is a 13*400 = 5,200 years. The last "end of the world" was around 3100BC.

So there's a 13 in that mess of cycles, but it's 13*400, not 13 *1000. Two of those would 10,400 years ago, not 13,000, so the last "galatic alignment" would not have lined up with this cycle at all.

So, if this business about the winter solstice aligning with the galactic plane is true, it's just a coincidence that it lies at the end of one of the Mayan cycles. There's nothing in their cycles that matches the actual precessional cycle that I can see. But because of that coincidence, we have this belief the "Mayans knew something"..........

-Richard