Coyote Gulch has republished a nice short take on Native American solstice celebrations and their ancient roots. The account notes that Native American architecture frequently aligned with the astronomical calendar and makes this observation early on:
The winter solstice is the day of the year when the Northern Hemisphere has the fewest hours of sunlight and the Southern Hemisphere has the most. For indigenous peoples, it has been a time to honor their ancient sun deity. They passed their knowledge down to successive generations through complex stories and ritual practices.