Today is the day that modern pagans have assigned to the Celtic-Roman goddess of ponies, Epona. If you want to celebrate, Devon, Maid of Epona has some suggestions involving beer and hippomanes here, and there’s a fantastic, comprehensive site about the history and archaeology of the goddess here. Alternatively, mosey over to Epona TV and start viewing their Gerd Heuschmann series on what’s gone seriously wrong with modern dressage.
18th December is the date the Romans assigned to the Eponalia, so not so modern