My only criticism of the Witches' Calendar is that Llewellyn doesn't make it clear that the calendar is done in Central Time which can cause problems for the unwitting.
One would think that Llewellyn would offer the Witches' Calendar in regional editions, like the Jim Maynard's Celestial Influences Calendar which has editions for each time zone.
Barring that, there should be a notice somewhere on the calendar as to which time zone it is geared to.
This year's calendar is packed with practical tips, invocations, folklore, herb lore, and original scratchboard art by Kathleen Edwards. Articles written by popular Pagan authors including Raven Grimassi, Ann Moura, Magenta Griffith, Ray Buckland, Ly deAngeles, Gail Wood, and Edain McCoy give you the ideas and tools you need to weave a Witches' web of magic all year long.