The commemoration of Nagula Chavithi is marked four days after Diwali. It is traditional for people to worship the snake god or Nagdev on Nagula Chavithi. As we celebrate Nagula Chavithi 2025, here is everything you need to know about this day, including date, Chavithi Tithi, Puja Muhurat, how to celebrate Nagula Chavithi, and its importance.