Kumbh Mela or Kumbha Mela is a mass Hindu pilgrimage of faith in which Hindus gather to bathe in a sacred or holy river. Traditionally, four fairs are widely recognized as the Kumbh Melas: the Prayagraj Kumbh Mela, Haridwar Kumbh Mela, the Nashik-Trimbakeshwar Simhastha, and Ujjain Simhastha. These four fairs are held periodically at one of the following places by rotation: Prayagraj, Haridwar, Nashik district (Nashik and Trimbak), and Ujjain. The main festival site is located on the banks of a river: the Ganges (Ganga) at Haridwar; the confluence (Sangam) of the Ganges and the Yamuna and the invisible Sarasvati at Prayagraj; the Godavari at Nashik; and the Shipra at Ujjain. Bathing in these rivers is thought to cleanse a person of all their sins.
At any given place, the Kumbh Mela is held once in 12 years. There is a difference of around 3 years between the Kumbh Melas at Haridwar and Nashik; the fairs at Nashik and Ujjain are celebrated in the same year or one year apart. The exact date is determined, as per Vikram Samvat calendar and the principles of Jyotisha, according to a combination of zodiac positions of the Jupiter, the Sun and the Moon. At Nashik and Ujjain, the Mela may be held while a planet is in Leo (Simha in Hindu astrology); in this case, it is also known as Simhastha. At Haridwar and Prayagraj, an Ardha ("Half") Kumbh Mela is held every sixth year; a Maha ("Great") Kumbh Mela occurs after 12 years. The priests at other places have also claimed their local fairs to be Kumbh Melas. For example, the Mahamaham festival at Kumbakonam, held once in 12 years, is also portrayed as a Kumbh Mela. Other places where fairs called Kumbh Melas have been hosted include Kurukshetra and Sonepat
The exact age of the festival is uncertain. According to medieval Hinduism, Lord Vishnu dropped drops of Amrita (the drink of immortality) at four places, while transporting it in a kumbha (pot). These four places are identified as the present-day sites of the Kumbh Mela. The name "Kumbh Mela" literally means "kumbha fair". It is known as "Kumbh" in Hindi (due to schwa deletion); in Sanskrit and some other Indian languages, it is more often known by its original name "Kumbha".
The festival is the largest peaceful gatherings in the world, and considered as the "world's largest congregation of religious pilgrims". There is no precise method of ascertaining the number of pilgrims, and the estimates of the number of pilgrims bathing on the most auspicious day may vary. An estimated 120 million people visited Maha Kumbh Mela in 2013 in Prayagraj over a two-month period, including over 30 million on a single day, on 10 February 2013 (the day of Mauni Amavasya). It has been inscribed on the UNESCO's Representative List of Intangible Cultural Heritage of Humanity,
Criteria for determining dates
Planetary positions during Kumbh Mela at Allahabad, c. 2013.
Each site's celebration dates are calculated in advance according to a special combination of zodiacal positions of Bṛhaspati (Jupiter), Surya (the Sun) and Chandra (the Moon).
Place River Zodiac Month Note
HaridwarGangaJupiter in Aquarius, Sun in AriesChaitra (March–April)
Allahabad Ganga and Yamuna Jupiter in Aries, Sun and Moon in Capricorn; or Jupiter in Taurus and Sun in Capricorn Magha (January–February) "Magh Mela", called the "mini Kumbh Mela", is held annually
Trimbak-Nashik Godavari Jupiter in Leo; or Jupiter, Sun and Moon in Cancer on lunar conjunction (Amavasya) Bhadra (August–September) Also known as Simhastha / Sinhastha, when Leo is involved
Ujjain Shipra Jupiter in Leo, Sun in Aries; or Jupiter, Sun, and Moon in Libra on Kartik Amavasya Vaisakha (April–May) Also known as Simhastha / Sinhastha, when Leo is involved
source: https://en.wikipedia.org/wiki/Kumbh_Mela













