learning Witchcraft by Lady Raven Avalon Black Raven Coven - Full Moons

According to the Farmer’s Almanac, there are typically twelve named full moons every year. The exception to this is, of course, the somewhat rarer Blue Moon. Those twelve named full moons are:
January – Wolf Moon
February – Snow Moon
March – Worm Moon
April – Pink Moon
May – Flower Moon
June – Strawberry Moon
July – Buck or Sturgeon Moon
August – Fruit or Barley Moon
September – Harvest Moon
October – Hunters Moon
November – Beaver Moon
December – Cold or Long Nights Moon
Since the Lunar cycle is only 29 days and our modern calendars have 30 or 31 days in a month, the dates of the full moon shifts from year to year, and occasionally allow that colorful Blue Moon
http://space.about.com/od/calendarsofevents/a/namedmoons.htm