Snan Purnima, also known as Deva Snana Purnima, is a very auspicious day observed on Jyeshta Purnima, the Full Moon day in Jyeshta month. In 2016, Devasnana Purnima date is June 20.
This festival is considered as the birthday of Lord Jagannath. It is celebrated with utmost gaiety in Puri Jagannath temple. The legend and the story of Jagannath Snana Purnima is mentioned in the Skanda Purana.
Snan Purnima is also celebrated as Vat Savitri Vrat in Orissa, Bengal, and some other Eastern parts of India. Snan Yatra is held on Devsnan Purnima day in Puri. In Andhra Pradesh, it is also celebrated as Eruvaka Punnami.