Makar Sankranti (also known as Makara Sankranthi or Maghi) refers both to a specific solar day in the Hindu calendar and a Hindu festival in reference to deity Surya (sun) that is observed in January every year. It marks the first day of sun's transit into the Makara (Capricorn), marking the end of the month with the winter solstice and the start of longer days. Makar Sankranti 6 images Makar Sankranti collage.jpg Festive celebrations of Makar Sankranti Also called Magha Mela, Maghi , Bhogi Observed by Hindus Type religious, cultural Significance Festival of Harvest, welcome longer days, sun worship Celebrations Kite flying, bonfires, fairs, surya puja in river, feast, arts, dance, socialization Date almost always 14 January 2017 date 14 January 2018 date 14 January 15 January (in Telangana and Andhra Pradesh) Related to Maghi (Sikhism), Maghe Sankranti, Magh Bihu, Shakrain Makar Sankranti is one of the few ancient Hindu festivals that has been observed according to solar cycles, while most festivals are set by the lunar cycle of the lunisolar Hindu calendar. Being a festival that celebrates the solar cycle, it almost always falls on the same Gregorian date every year (January 14), except in rare years when the date shifts by a day for that year, because of the complexity of earth-sun relative movement. The festivities associated with Makar Sankranti are known by various names such as Lohri by north Indian Hindus and Sikhs, Sukarat in central India, Magh Bihu by Assamese Hindus, and Pongal by Tamil Hindus. Makar Sankranti is observed with social festivities such as colorful decorations, rural children going house to house, singing and asking for treats (or pocket money), melas (fairs), dances, kite flying, bonfires and feasts. The Magha Mela, according to Diana L. Eck – a professor at Harvard University specializing in Indology, is mentioned in the Hindu epic, the Mahabharata, thus placing this festival to be around 2, 000 years old. Many go to sacred rivers or lakes and bathe with thanksgiving to the sun. Every twelve years, the Hindus observe Makar Sankranti with one of the world's largest mass pilgrimage, with an estimated 40 to 100 million people attending the event. At this event, they say a prayer to the sun and bathe at the Prayaga confluence of the River Ganga and River Yamuna at the Kumbh Mela, a tradition attributed to Adi Shankara.