Here in the northern hemisphere, fall's arrived, and winter's coming on. Do you do anything special to mark the change of seasons?

How do you get ready for the autumn season, the dark season, the cold season? Do you have any special ceremonies or customs right at this time of year—before “the holidays” set in? How do you greet the changing light, the early dusk, and the imminent expiration of the calendar,? Does it call for any ritual response, or do you even notice it?

Tags as I wrote them: seasons, equinox, autumn, fall, transition, darkness.

(Thanks for the correction, Dominic.)