Chavithi means fourth , Nagula Chavithi is observed on the fourth day after Diwali. On this day, it is customary to visit a sanke pit or a temple and offer prays to the snake lord and seek his blessings. It is believed that by praying to the snake lord, one can get rid of his illness and live with happiness and prosperity.
This year the festival falls on 17th November 2012.
People also offer milk at the snake pits, if not possible a tiny replica of the snake pit is prepared using flour and milk is offered to it.