Taking sacred baths at Maha Kumbh Mela is believed to purify the soul and wash away sins. Let’s look at the dates of all the shahi snan, history, and significance of the holy mela.

Nearly 15 million Hindus, six times the number expected, took a dip in freezing waters seeking absolution of their sins on Monday, the first day of India's festival that could draw the world's largest single gathering of humanity.

The Maha Kumbh festival — held every 12 years — started Monday, with more than 15 million pilgrims bathing in the holy rivers, according to officials.