Sonepur Cattle Fair Sonepur Cattle Fair is Asia’s largest cattle fair held in Sonepur. It has its roots in ancient mythology and folklore. It is believed that the ancient Mauryan king Chandragupta Maurya bought elephants and horses across the Ganges river, and ever since, this trade fair has been organized every Kartik Purnima (full moon day after Diwali). Domestic cattle, including cows, bulls, oxen, elephants, sheep, goats, and birds, are brought in from all over the country and sold. Sonepur is marked as a holy site as the rivers Ganga and Gandhak confluence. People take a holy dip and offer prayers at the Hariharnath temple. Handicrafts, handlooms, magic shows, folk music, and dance are displayed at this fair, thus attracting a huge number of tourists from the country and abroad.