I dunno for me Thanksgiving is the appetizer for Christmas. If there isn't a tree up during Thanksgiving it's a shit Thanksgiving. Especially in FL where we really don't get a fall season and it's fucking 85F on Thanksgiving. I need that tree or something to visually show that we are in a new season.
Also putting up xmas shit is a pita. I'm not doing it to have it up for a month. IMO starting Nov 1st is fair game and I'll leave that bitch up till the 4th of July.