Because the moon revolves around the Earth once every 28 days, or so, we may, on occasion have a year with 13 moons (rather than 12). The fourth full moon within a season, according to the Farmer’s Almanac, is known as a Blue Moon. (Note, some call the second full moon in a calendar month a Blue Moon). The Blue Moon is celebrated as a time to charge dreams and wishes with power so they may come into being.

However, there is another rare moon occurrence that seems to slip by, unnoticed. It’s known as the Sidhe (pronounced shee) Moon or Faery Moon (aka Black Moon). The Faery Moon is the second new moon in a calendar month, and this only occurs once every two to three years.