my family's personal tradition is to have an extended family concert, during which my virtuosi cousins demonstrate their piano chops and i look like a potato
we celebrate Makar Sankranti. it's a little like winter solstice. according to Hindu solar calendar it's the day the sun transits from 'Dhanu'(Sagittarius) to Makar(Capricorn)
on this day we mostly prepare "Pithe-puli" which is a category of desserts made of rice flour,milk and jaggery/molasses. we usually spend it with our extended family. but this is very regional. I have no idea what rest of India does lol
and I go apoplectic if I see the term Chinese New Year by the waynot that Lunar New Year is better because that infringes on the Jewish new year, but I haven't found an alternative