15 January 2019 is Makara Sankranti, Pongal, Magh Bihu, Uttarayana Punyakalam & Makaravilakku or Makarajyothi at Sabarimala Ayyappa Temple. Makara Sankranthi marks the transition of Sun into Makara rashi (Capricorn). In 2019, Makaravilakku date is January 14.
It is celebrated as Pongal in Tamil Nadu; Lohri in Punjab, Haryana, Delhi and some other North Indian states; as Magh Bihu in Assam.
Makara Sankranthi is a biggest festival for Telugu and Tamil people.
With Makara Sankramana, Thai Masam begins in Tamil Nadu and Makara Masam starts in Kerala.
Makara Sankramana Snana are performed at various places along the river banks of Ganga, Godavari, Krishna, Kaveri, Yamuna, etc.