Gangasagar Mela is an international Village fair , takes place every year on the auspicious day , 14th January at Gangasagardwip . Gangasagardwip is the largest Delta island of Bay of Bengal in Sundarbana area . But no tiger lives here . This island, also known as Gangasagar or Sagardwip which is about 100 km south of Kolkata and is a Hindu pilgrimage . Every year on the day of Makar Sankranti ( Last day of Bengali month Poush which is set on 14 January), hundreds of thousands of Indians and foreigners gather to take a holy dip at the confluence of river Ganges and Bay of Bengal . This confluence is also called Gangasagar and devotees worship (puja) the confluence and the Kapil Muni at Kapil Muni Temple . Apart from Kumbha Mela there is not any such huge gathering and Mela on the Earth . All the year, specially from the end of October to the end of February devotes come from whole world to Gangasagar and visit Kapilmuni Temple after having a holy bath at sacred water of the confluence.