is nightmare before christmas halloween or christmas

Well, it's a bit of both! It's a Christmas movie, but it has a lot of Halloween elements too. It's all about Jack Skellington, a skeleton who is the Pumpkin King of Halloween Town, but he's feeling a little bored with the usual Halloween festivities. So he stumbles upon Christmas Town and decides to take over the holiday, turning it into a nightmare for the residents of Christmas Town. So, it's really a movie that blends the two holidays together in a unique and entertaining way.