In our family, we came to realize that a day was just a day, and it didn't matter if you celebrated the day before, or the day after. I went for years never having my parents together for holidays until the later years and got every accustomed to doing things late evening.
Thanksgiving we did the day before or after...if I had to go to school that Wednesday, they would just let me stay home.
Christmas, if one of them had to work Christmas Day we would just celebrate Christmas Eve. Some of my friends were jealous b/c I got to open my presents early