If you came here looking for THE Wiccan Calendar, I do really have only one to show you: the Witches’ Calendar by Llewellyn. It has pagan history, phases of the moon, seasonal essays on egg lore for instance around easter. It is in fact packed as full of information as a calendar can get.
Of course it includes the pagan holidays and astrological information, but it’s also simply a fun calendar to have at your house to learn more about Wicca.
Llewellyn also sells pagan planners and almanacs, almost as popular as the witches calendar… Do check them out too.