How often will the full moon occur at winter solstice? Surprisingly rarely! That's because the lunar and solar years are different lengths. Anthony Murphy of Mythical Ireland explains in this new video.
This video accompanies a comprehensive article about how the 19-year Metonic Cycle of the moon would have been observable in the Neolithic. See the article (and other videos) here:
https://mythicalireland.com/blogs/ast...