A long, long time ago, Christmas stories did not start appearing until after Thanksgiving and that black and blue shopping frenzy that follows.
Therefore, I think the week following Thanksgiving would be a good time to start. Thanksgiving this year is on Nov. 23. There are five Thursdays in November.That would allow slightly more than a month to present Christmas Hubs. If I see any in October, I am likely to skip over them. I just will not be in the proper frame of mind to appreciate them.
So I vote the week after Thanksgiving. It could also serve as a sign to other groups and stores, etc. that we do not need to start things so early.
I know clothing stores sell their summer clothes in the winter and by the time summer gets hear, the stores are putting out the fall merchandise. I do not see the advantage of doing that.