NOTICE: for the time bieng we are at http://code.google.com/p/persian-calendar/
a light-weight and easy to use Persian Calendar system (known as jalali or shamsi) for JDK.
algorithms for converting Julian days to the Persian calendar, and vice versa are adopted
from "casema.nl/couprie/calmath/persian/index.html" written entirely in VB.
The algorithms is not exactly the same as the original.
I've done some minor changes in the sake of performances and
corrected some bugs