What is "pradharshini"

Pradharshini is the annual Cultural festival held at Kilpauk Medical College, one of the premier medical colleges in Tamil Nadu, India.It has been held every year for the past 30 years with the 30th anniversary being celebrated this year,2014.It is usually held in the last week of September for 3 days and 4 nights. Pradharshini is considered as one of the biggest cultural festivals of South-India and the biggest conducted by any medical college.