you dont have a plan for supporting a culture ? a nation with over 3000 years history , if you support persian - jalali calendar i'll take that as a sign of respect to "Omar khayam" the founder of algebra , even .Net Framework has complete functionality to support jalali calendar this will take less than 1 hour to support one of 14 calendars in the world
all i ask you is to read this article about Omar Khayyam at http://en.wikipedia.org/wiki/Omar_Khayyam
and then decide whether to support this calendar or not.
btw , I Love telerik