The internets have been in a titter for a week, and no doubt every Blue Moon café, restaurant and tavern is in high celebratory mode. Really, the significance of the Blue Moon is that it is hard to categorize. Solar and lunar time only reconcile about every nineteen years, so there are twelve lunar cycles and some change in any solar year. Whether there are twelve or thirteen full moons depends on which day you start the calendar. Depending on the tradition (and the latitude), we label each month’s moon according to its seasonal significance. Thus the January moon is the “Wolf Moon”, the February moon is the “Hungry Moon,” the March moon is the “Storm Moon,” etc. What happens when you have two full moons in a month? You don’t know how to categorize the second one. It’s also an uncommon occurrence, occurring only about every three years.A Blue Moon is a full moon in which you do something you wouldn’t ordinarily do, and something that you probably won’t do again for awhile. When I had a large teaching coven, the women would circle with the men on that night, just to show that we were not categorically opposed to it (but still not willing to make it a regular occurrence).The color blue in lunar context has some significance. Red is ordinarily the color associated with the full moon (look at it closely some time), a phenomenon that was easier to see when the moon was closer to the earth. Red is a very powerful magical color, associated with the Mother and characteristic of the Dianic Tradition. White is the color of the waxing moon, associated with the Maiden, while black is the color of the Crone and the dark portion of the waning moon. Thus we have the three important magical colors of the Dianic Tradition and many others. Blue is a cooling color less frequently invoked, which nonetheless has its own important properties. If colors are invoked when casting a circle, blue is often linked with the direction of West. In shamanic traditions which are based on the number four, unlike Indo-European cultures, which are almost always based on the number three, blue is usually included as one of the four basic colors.A lot of pagans are saying that the Blue Moon has very special powers, but I disagree with this. In and of itself, the Blue Moon only has meaning if you accept the validity of the Julian calendar. How many of us do? I accept that I have to work with this calendar, to navigate the business and larger social world, but magically my calendar is marked in different time, beginning on November 1st. Other people may start their year at the winter solstice, or the spring equinox, or at some other time. What gives the Blue Moon its significance is the the permission people give themselves to loosen up, be unorthodox, try something new. This is the special energy that drives the Blue Moon.