The Moon Phases!!
So, in the Wheel of the Year subforum I had a sticky there on this, however I've redone it as I realized it was incomplete... oops. So here is the new sticky/info.
http://www.justmommies.com/forums/f9...and-magic.html
The first half of the moon phases are about bringing things towards you (as the moon is growing), the second half is about banishing bad habits/things in life (as the moon is disappearing). It also covers the Dark Moon and the Blue Moon!