So anyway, according to the respected authorities quoted by USA Today, it's a wee bit more complicated than that. Basically, on that day, which also happens to be the winter solstice, the Mayan Long Count calendar will flip back to zero. Like the odometer in my Dad's 1979 Volkswagen camper van did after 100,000 miles.
According to the article
Part of the 2012 mystique stems from the stars. On the winter solstice in 2012, the sun will be aligned with the center of the Milky Way for the first time in about 26,000 years. This means that "whatever energy typically streams to Earth from the center of the Milky Way will indeed be disrupted on 12/21/12 at 11:11 p.m. Universal Time," Joseph writes.
They then go on to say that scholars are pretty sure the Mayans didn't know that.
The thing is, I'm guessing that they did. In fact, I'm pretty sure they did... Those dudes kinda specialized in knowing unknowable things about the universe.
And what I want to know is...
how?