[20:15:20] <pedro> it's not even december ugh
[20:15:25] <pedro> why are people doing christmas things
[20:15:55] <Guilty> Exactly!
[20:16:13] <Guilty> There are 12 days if Christmas and /none of them are in November/
Apparently in the US there used to be a tradition of not starting the Christmas decorating, advertising, etc. until after Thanksgiving. That stopped before I was old enough to remember, though, and a few years ago I started seeing Christmas decoration the day after Halloween.
But you shouldn’t start doing Christmas things as late as the first day of Christmas; that’s December 25th.
People who are less Jewish please correct me, but i believe the Twelve Days of Christmas start on, depending on flavor, Christmas and end on 1/5 vs the day after Christmas and end on 1/6. This last evening (Twelfth Night) is celebrated as the Ephiphany or Three Kings Day, when the kings arrived to meet Jesus. I know it's a thing at least in France because my old French teacher would bring cake to class and this was memorable to a small person. Christmas season in retail begins before Christmas so people have time to buy presents, gift wrap, decorations, etc, and therefore doesn't really overlap.
Edit: And the other relevant time period is Advent, the lead-up to Christmas and its twelve days, which in 2016 begins on 27 November. This is what you get an advent calendar for and it has more than 12 days.
Marri is right. Small refinements being that (a) Twelfth Night is the evening /before/ Epiphany, and Epiphany is the next day; and (b) Advent calendars, for convenience, usually run Dec 1 - 25, but Advent starts "four Sundays before Christmas" so its start date varies by year.
(And my family does minimal Christmas things until the 25th, though some prepwork before then is of course necessary!)
ETA: Going back on topic:
<kappabeta> tbh if the s9 recruited reihar nirue i would worry for the s9
<kappabeta> "inside voice, miles."
<kappabeta> "because you are inside. of. my. brain."