Pongal festival is celebrated on 14 january 2017. Pongal is a Hindu festival which is observed by people of Tamil Nadu. Pongal is a four days festival and the most important day of Pongal is known as Thai Pongal. Thai Pongal which is the second day of the four days festivity is also celebrated as Sankranti. The same day is observed as Makar Sankranti in North Indian states when people take holy dip in river Ganges. The day before Thai Pongal is known as Bogi Pandigai.