Ever wondered why Christmas, Hanukkah and Kwanza all happen to fall around the same time of year? It turns out that they’re all originally celebrations of the winter solstice, which is the point at which the days stop getting shorter and start to grow longer in the northern hemisphere.

And Santa Claus - he actually originates from an old Danish sea god who had the power to control storms and resurrect the dead. With powers like that, I’d imagine he dominated the line-up.
This article provides a pretty comprehensive overview of the real meaning of the holiday season.

Happy Holidays, everyone!