Anciently many calendars were based around the movement of the Moon. Most such lunar calendars became obsolete and were replaced by solar calendars. Even so, some ancient holidays are reckoned according to lunar calendars. As a result, some holidays and festivals move their dates from year to year. They are known as “movable feasts.”
Readers, please enjoy this guest blog post by Sandra Kynes, author of several books, including The Herb Gardener's Essential Guide, Plant Magic, and the new Witches' Encyclopedia of Magical Plants, among many others.
Although a few old books...