According to Vedic calculations, the passage of one year, as measured by humans, is equivalent to one day as experienced by Gods. All the Gods visit Lord Vishnu during this time, known as 'Brahmi Muhurtha Time'. Those who are blessed with the darshan of Lord Sri Hari during this time are rewarded with the Punya that equates to the combined merit of visiting the three crore Gods, or 'Mukkoti Devatas'. For this reason, this day has come to be known as Mukkoti Ekadasi.