X-Box 360 day is 26th December and is when I get out the X-Box 360.
It stays out usually for the rest of the Christmas season (the remaining 12 days)
The other time I get it out is 26th July (the day after "Christmas in July")
It's about containing what I see as too graphic violence / negativity to a certain part of the year.
The above photo was taken Boxing Day 2017 probably shortly before I got out the gaming console and TV which I set up on the box table you can see. Christmas is supposed to act as a counterbalance, but considering the parties / fare /extra activity of Christmas the combination can be a bit physically and emotionally devastating.