"Divine potency can also be a function of time. The confluence of the Ganga and the Yamuna is for the Hindus more sacred than any other confluence of any other rivers. Hence more pilgrims bathe at this sangam [confluence]. The flow of pilgrims rises dramatically when the planet Jupiter enters the house of Aries, and the Sun enters the house of Capricorn. The planetary alignment takes place once in twelve years, which is marked by Maha Kumba Mela, the great gathering of holy men, believed to be the largest congregation in the world."
January 1, 1970
https://en.wikiquote.org/wiki/Ganges_in_Hinduism