We start ours on Christmas Eve. We do the Feast of the & Fishes, dinner starts around 1400 and we eat until we make it through all the courses.
We read Christmas stories and listen to Christmas music and the boys get to open one gift.
Before bed, the boys place Baby Jesus in the manger... and we talk about how Christmas is the celebration of the birth of Jesus.
Christmas Day, we get up and have breakfast and then spend the rest of the day opening gifts. This year may be different, because the kids are getting older, but in previous years, they were opening gifts into the New Year because they kept playing with the new stuff. LOL