First of all...why is this anonymous? How ridiculous!
Now, here's how our tribe does it.
Outdoor Christmas lights on Thanksgiving week.
All Christmas decorations, especially stockings, on the first Sunday of Advent. That includes the Advent Wreath! (Those stockings are to be filled with chocolate gold coins and oranges on the eve of the Feast of Saint Nicholas (aka, Krampus Night).
The manger scene comes out in stages:
Stable first week of Advent
Animals on the second week of Advent
Shepard and his sheep on the third week of Advent
Joseph and Mary on the fourth week of Advent
Jesus and the angel on Christmas
The three wise men are put out on the 26th, but not next to the manger. They
move closer to the manger every day until January 6th, the Epiphany.
Christmas Tree is purchased (or the fake tree is put up) either on Christmas Eve, or a few days before, depending on circuмstances.
The Christmas Tree is decorated on Christmas Eve
The Tree is not lit up until Midnight of Christmas EVe