Mummer's Day is an ancient Cornish midwinter celebration that occurs every year on December 26 and New Year's Day in Padstow, Cornwall. It was originally part of the pagan heritage of midwinter celebrations that were regularly celebrated all over Cornwall where people would dance and disguise themselves by blackening up their faces or wearing masks. In Penzance the festival has been given the name Montol believing it to be the Celtic Cornish word for Winter Solstice.
Wikipedia.org/ Witches' Sabbath or Sabbat-- is a meeting of those who practice witchcraft and other rites. European records indicate cases of persons being accused or tried for taking part in Sabbat gatherings, from the Middle Ages to the 17th century or later.