One of my fellow bloggers, Srinivas Shastri wanted to find out if there was a way to find out the day Dussehra occurred in 1916. This is essentially a problem of calendar conversion and a lot of research has gone into this. For quick reference to find it out, I use this website - http://web.meson.org/calendars/. I would love to include this information in my panchanga applet and birth chart generation applet. However, I do not have source code of such an algorithm. If any of you can help me understand the lisp code in this paper Indian Calendrical Calculations and convert it to Java, I would really appreciate it.
As mentioned in the post about the panchanga, tithi is essentially angular distance between the Moon and Sun modulus 180 divided by 15. In Shukla paksh, i.e. the bright half of the month, the distance increases from 0