Today is Yuletide, the actual holiday for this time of year that was so pervasive that the Christians had to co-opt it because the people wouldn't stop celebrating it. One once-and-future Sun King is as good as another, right?
Anyway, today is Rhiannon's day - give someone a special gift in her honor, eat some traditional treats like fruitcake or eggnog, and thank the sun for coming back once more. Tonight is the longest night, and the sun's return begins technically with the next sunrise.
And, in the interest of religious freedom, when you hear someone doing the supposedly inclusive Christmas/Hanukah/Ramadan/Kwanzaa schtick, tell them that Yuletide should be on that list, too. We aren't going away, or underground or back in the broom closet, so we might as well get along.
Brightest Blessings to you and yours!