Normal people celebrate the New Year on January 1st...
https://en.wikipedia.org/wiki/Ōmisoka
Added 2 minutes later
Celebrating the New Year with family has a significant advantage: a huge amount of food that you don't buy or prepare, but you can just eat it because it's made in huge quantities with a reserve for a billion years.
But this year I'm alone again, so it's not worth the effort to prepare a "festive" meal. And without it, this day somehow loses all its specialness.
Where do we end up when we save the world?