o follow the Moon waxing and waning throughout the different zodiac signs is an elegant way to be more aware of your own constant change in the emotional landscape and how your emotional outlook is coloring the perception of events and circumstances. The Moon is the fastest moving planet we observe in astrology and is known for her fickle nature. Every 2 ½ days there is a variation in the way we subtly feel and react from that gut level instinct. The Moon is representing our emotional filter and the way we perceive life. The position of the Moon in your personal chart is one of the most important points of an astrological reading.
So here you have two definitions of a blue moon but the one for a calendar blue moon does not describe the true meaning of a blue moon. Here's why:
Full moons on different days. Where you live on earth rarely makes a difference as to whether the moon is full, quarter or new. This is because it takes the moon almost a month to travel around the earth and it only takes a day for the earth to turn around once. So in comparison, the moon sort of sits in the sky and waits for us to see what phase it is in. Still, there are times when the moon will be full on different calendar days in different areas of the earth.