The Coligny Calendar Posted byGwilym Morus-BairdApril 30, 2019August 20, 2020Posted inWhat is Celtic Mythology? A lot of nonsense has been written about Celtic calendars in recent years, but there is one Celtic calendar that is both ancient and authentic, and that is the Coligny Calendar. Share this:FacebookTwitterTumblrRedditLinkedInPinterestPocketEmailPrintLike this:Like Loading...