Gangasagar is a village and a gram panchayat in the Sagar CD block in the Kakdwip subdivision of the South 24 Parganas district in the Indian state of West Bengal.

According to regional legend, Kardama made a pact with Vishnu, in which he agreed to undergo the rigours of marital life, on the condition that the deity would incarnate as his son.

One day, King Sagara's sacrificial horse, which was necessary for the performance of his ashvamedha yajna ceremony, disappeared; it had been stolen by Indra.

The date of the descent of Ganga is regarded to be the 15th day of January of the Gregorian Calendar, which coincides with the observance of Makara Sankranti.

On this occasion, the sun god, Surya, is believed to enter the Makara Constellation (Uttarayana of the Hindu calendar).

Gangasagar, West Bengal has different weather patterns throughout the year, including warm and humid summers, chilly winters, and heavy rains during monsoon:

Gangasagar is a famous Hindu pilgrimage center where the Ganga river meets the Bay of Bengal.

Every year on the day of Makar Sankranti (14 January), hundreds of thousands of Hindus gather to take a holy dip at the confluence of river Ganges and Bay of Bengal and offer prayers (puja) in the Kapila Temple.

[3] The Gangasagar Mela and pilgrimage is held annually on Sagar Island's southern tip, where the Ganges enters the Bay of Bengal.

[13] The Gangasagar pilgrimage and fair is the second largest congregation of mankind after the triennial ritual bathing of Kumbha Mela.