Kumbha the word comes from immortal pot of nectar for which the demigods and the demons fought with each other as per the Vedic scriptures described in the ancient times also known as the puranas. These Vedas stood the test of time wherein this tradition got evolved which is worldly known as the Kumbha mela.
This festival The Kumbhamela is a Hindu festival of faith where devotees gather to take a dip in the sacred holy river. There are widely four recognized fairs of Kumbha mela which are namely The HaridwarKumbha, The AllahabadKumbha, The NasikTrambakeshwar and The Ujjainsimhasta. The fairs are held by rotation periodically at these places.
The festive site is always the banks of Ganges in Haridwar with the confluence of Yamuna, Saraswathi at Allahabad, The Godavari at Nasik and The Kshipra at Ujjain. During the festive period the devotees bathe in the holy waters to wash their sins and make themselves pure by heart.
The Kumbha is held every 12 years with a three year difference in the Kumbha mela held at haridwar and nasik. The Kumbha mela at Ujjain and Nasik are celebrated either the same year or one year apart. The date of the Kumbha mela is calculated as per the vikramsamvat based on jyotisha principles in accordance with the zodiac positions of Jupiter, the moon and the sun. A fact also is that half Kumbha mela is celebrated every sixth year at Allahabad and Nasik with the MahaKumbha mela occurring after 144 years.
As the Hindu mythology goes lord Vishnu dropped few drops of THE DRINK OF IMMORTALITY known as The AMRITA while pouring into a pot called as Kumbha at four places which are the present sites of the Kumbha mela.
This festival is considered in the world as the largest peaceful gathering with pilgrims congregation no festival ever has matched.