Hindu festivals are not only filled with gaiety and joy, but they invariably have solid scientific and historical foundations, which lead to the utmost physical rejuvenation, psychological healing and spiritual upliftment.
It is according to scientific methods that the place and date of each Kumbh Mela is determined. Whenever the planet Brihaspati (Jupiter) enters the astrological sign Vrishabha at the same time that Surya (the Sun) and Chandra (the Moon) are in Makara, the result is an incredible positive charge in the atmosphere of Prayag. According to Western astrology, this happens when Jupiter enters Taurus, and the Sun and New Moon enter Capricorn. This positive charge affects the water, the air and the entire atmosphere, such that simply being at that special place, and taking a bath in the Ganga, is very conducive to spiritual growth, and physical and emotional well-being.
As Jupiter takes eleven years, ten months and fourteen days to complete its revolution around the Sun, it means that approximately every twelve years Jupiter moves into its same position.
The Kumbh Mela is not simply a theoretical ritual, followed blindly. Rather, it is a scientific, historical and thoughtful tradition of the Hindu spiritual tradition.