Lord Vishnu (the preserver), while fighting the demons, shed drops of nectar that were the source of divine energies that changed the soil and water of these areas. Since then, Haridwar, Prayagraj, Nasik, and Ujjain have become the holiest places to go on a pilgrimage.
The Mela is organised along the banks of the sacred rivers that flow through these cities. Therefore, to greet the devotees with great pomp and zeal, one of these sacred places arranges the fair in rotation every three years. Dates are set by looking at the many zodiac signs that are active during that time. The auspicious dates to start the celebrations are determined by the placements of Brahaspati (Jupiter), Surya (the Sun), and Chandra (the Moon).
The fair is held near the banks of the sacred Ganga in Haridwar. It occurs in the springtime, in the Hindu month of Chaitra, which is between March and April. Jupiter’s zodiac sign is Aquarius, while the Sun’s sign is Aries. Shivratri is always the first bathing day.
The Poorn Kumbh/Maha Kumbh Mela in Prayagyraj (Allahabad) in 2025 will take place at the confluence of the rivers Ganga and Yamuna. According to the Hindu month of Magha, it is organised in the winter months of January and February. Makar Sankranti is always the day of the first bath. Jupiter is in either Aries or Taurus during this time, while the Sun and Moon are both in Capricorn.
The setting of Nasik is created by the River Godavari’s ghats. In the summer, specifically in the Bhadrapada months of August and September, the fair is held. Chaitra Purnima is the first day for bathing.
Last but not least, the fair is held in Ujjain on the banks of the River Shipra. Simha Sakranti is the day before the first bathing day. Additionally, the celebration takes place in April and May during Vaisakha, the spring season.