Vat Purnima also called Vat Savitri Vrat is a Hindu celebration observed by married women in North India and in the Western Indian states of Maharashtra, Goa, Gujarat. On this Purnima (full moon) during the three days of the month of Jyeshtha in the Hindu calendar (which falls in May–June in the Gregorian calendar) a married woman marks her love for her husband by tying a ceremonial thread around a banyan tree. The celebration is based on the legend of Savitri and Satyavan as narrated in the epic Mahabharata.
The legends dates back to a story in the age of Mahabharata. The childless king Asvapati and his consort Malavi wish to have a son. Finally, the God Savitr appears and tells him he will soon have a daughter. The king is overjoyed at the prospect of a child. She is born and named Savitri in honor of the god.
Method of Vat Purnima Vrata in Skanda Purana, which is the 14th of Puranas.
On the occasion of Vat Purnima, women keep a fast of three days for their husbands, as Savitri did. During the three days,
