Sankranti literally means movement. It is the movement of Sun from one Rashi (zodiac) to the other. Vishnupadi Sankranti is the movement of Sun (Surya) to Vrishaba, Simha, Vrischika and Kumbha Rashi. The entry of Sun is also known as Vishnupadi Punyakalam. Vrishabha Sankranti (May 14 or 15) – Transit of sun from Mesha or Meda Rashi to Vrishabha Rashi (Aries to Taurus). Prayers are offered to Vishnu and Shiva on the day. Donations are made. People also perform holy dip in sacred rivers. Simha Sankranti (August 16, 17 or 18) – Transit of sun from Karka Rashi to Simha Rashi (Cancer Zodiac to Leo Zodiac) – Narasimha, Vishnu, Shiva and Surya are worshipped. Ganesha is offered special pujas and bath with coconut water. Havan is performed in the name of the various avatars of Bhagavan Vishnu. Vrischika Sankranti (November 16, 17 or 18) – Transit of sun from Tula Rashi to Vrischika Rashi (Libra to Scorpio). The famous Sabarimala Pilgrimage begins on this day. Vishnu Sahasra...