The tree goes up the weekend after Thanksgiving weekend! But if you want to push it forward as far as Black Friday, I’ll look the other way.
Right after the October Monday holiday, I went for an after dinner walk and was appalled to see that one of my neighbors had their Christmas candles lit in all the windows!

Too soon, folks! When it comes to holidays, you gotta pace yourself. No point in getting sick of it by the time the day itself rolls around.
My favorite Christmas short story addresses this issue:
Christmas Every Day