Ganga Sagar Mela is an annual religious gathering and festival in India. It is one of the largest fairs in the country and is celebrated at Sagar Island in the state of West Bengal. The festival is dedicated to the Hindu deity Sagar, who is believed to be the combined form of Lord Vishnu and the holy river Ganges. The main attraction of the festival is the ritual bath that pilgrims take in the holy waters at the confluence of the River Ganges and the Bay of Bengal. The Gangasagar Mela usually takes place in January during the Makar Sankranti festival. Makar Sankranti is a significant Hindu festival that marks the winter solstice.