Padma Ekadashi or Parsva Padma Ekadasi is observed on Shukla Paksha Ekadashi in Bhadrapad Maas. In 2012, Padma Parivatana Ekadashi date is September 26. Padma Ekadasi is known with various names – Parivatini Ekadashi, Parsava Parivatini Ekadasi, Vishnu Parivartini Ekadashi, Jal Jilani Ekadasi, Vamana Ekadashi, Jayanti Ekadasi.
Bhadrapad Padma Ekadashi is one of the Ekadashi vratas that falls during Chaturmas period. Padma Parivartini Ekadashi is also called as Vamana Ekadashi because on this Ekadasi Lord Vamana sent King Mahabali to Pathala loka.
Vamana Jayanthi is observed on the next day of Padma Parivathini Ekadashi. The legend of Padma Parsva Parivarthana Ekadashi is mentioned in Brahma Vivarta Purana as the conversation between Lord Sri Krishna and Dharmaraja.