The Mayan Long Count Calendar ends December 21, 2012. What this means is a matter of opinion and conjecture. Everyone I know seems to be undergoing some type of tempering and is being made ready for a change.
The program will calculate the Long Count Date with the following features:
Years from 99,000 B.C. to 99,999 A.D.
Elapsed days - Great Cycle.
Remaining days - Great Cycle.
Percentage of Great Cycle.
Cycle Harmonics
Tzolkin Day