Mid January across India is celebrated by many names:

BIHU:
This festival marks the end of the harvesting season. Assam celebrates this festival for a span of two days. Known as the harvest festival, Magh Bihu is dedicated to Lord Surya. The main significance of the festival is that it marks the end of winter
Since the granaries are full, there is a lot of feasting and eating during this period along with sport competitions.

LOHRI:
Lohri is a popular winter folk festival celebrated primarily in the Indian Subcontinent. The significance and legends about the Lohri festival are many and these link the festival to the Punjab region. It is believed by many that the festival marks the passing of the winter solstice.
Bonfire, song, and dance punctuate this festival.

MAKKAR SANKRANTI:
Makar Sankranti or Uttarayan or Maghi or simply Sankranti, also known in Bangladesh and West Bengal as Poush Sankranti, and in Nepal as Maghe Sankranti, samkranti here means ‘transfer’, this day is considered as the transition day of Sun into the Capricorn.
Kite flying and indulging in sesame sweets are some of the things associated with Makkar Sankranti.

PONGAL:
Pongal, is also referred to as Thai Pongal, is a multi-day Hindu harvest festival of South India, particularly in the Tamil community. It is observed at the start of the month Tai according to Tamil solar calendar, and this is typically about January 14.
Feasting, gift-giving, visiting homes marks this vibrant festival.