The Ekadasi Tithi in the month of Bhadrapada, Shukla Paksha (bright phase of the Lunar cycle) is known as Parivartini Ekadashi or Parsva or Vamana Ekadasi. On this day, Lord Vishnu, who is in a state of yogic sleep (Yoga Nidra), changes his posture. Hence, it is referred to as Parivartini Ekadasi (which literally means