பிரதோஷம் & சிவராத்திரி விரதங்கள்

Pradosh Vrat is observed on the Trayodashi (13th lunar day) of each paksha to honor Lord Shiva. Maha Shivaratri is the most significant Shaivite festival of the year, observed on the Chaturdashi of Krishna Paksha in Phalguna.