The Mayan calendear has a wheel within a wheel. The one everyone is talking about is called the Haab and its the one with 365 days. The "other" mayan calendar is called Tzolk'in. It has 260 days in a year. And it's going to end its 13th b'ak'tun (cycle) on the coming March 31st 2013.
For those with an eye, this 'window' is there and available. Do with it what you may ....
Peace
Forecast for today.
http://www.mayanmajix.com/TZOLKIN/DT/DT.html