When would you open them?
I know the 12 days of Christmas traditionally starts on Xmas day so don’t want to do that.
If I start on the 1st, it’s finished quite early (might have to get another!)
Have an early Dec birthday so considered starting after that, but it is a bit random date-wise.
The kids have 24 day calendars, this is a nice one for me, no one else is impacted by what I decide!
What are you planning on doing?