In ancient times long, long ago, before humans made up Christianity, the ancient Greeks developed celestial navigation and the concept of the solstice, by observing the positions of the stars in the sky. The Anasazi made the sun dagger. It is a spiral design traced into a cave wall, and during midsummer, midwinter, and the equinoxes it is perfectly bisected or surrounded by daggers of sunlight which enter the specially placed windows.
Sun Dagger marking the position of the sun in relation to crop planting seasons.
The Druids started work on Stonehenge about 5000 years ago, and the stones of Stonehenge line up with the sun just like the Sun Dagger of the Anasazi. Those ancient people knew what they were doing. they needed a way to know when to plant, and when to harvest. How to sail out on the ocean and how to get back. Watching the sky gave them all that, and more.
The Christians stole the Solstice holiday from the Pagans around the second century after Jesus birth. The Roman Saturnalia, a harvest festival at that time marked the winter solstice—the return of the sun—and honored Saturn, the god of sowing.
Who needs a fictitious deity or a old man stuck in your chimney when you can have a celebration of a season, the return of light to the north, and a planet that still does the same thing it has done for billions of years!