We must believe that it is true.
~~~a proverb recorded in1582
The Blue Moon, is it really blue? Well, ,no, not unless volcanic dust or smoke in the upper layers of the atmosphere make it appear so.
To over simplify things. Our current calendars 12 months is out of sync with the 13 full moons of the Lunar year. and so some seasons end up with 4 full moons instead of 3 the 3rd full moon is the Blue Moon, or there is the more modern more modern definition of 2 full moons in one month. Not all years have a Blue Moon, and some have 2, usually this rare occurrence, about 4 or 5 times in a century. provides us with a Blue Moon in January and March, and no full moon at all in February; other combinations are possible, though even rarer. double new Moons also occur, but no one seems to pay much attention to that.
One might think that the attention paid to the Blue Moon is in some way related to it's effect on people, well I just don't know. Certainly the extra light would have been welcomed by hunters , farmers and others in the time before the flood of outdoor electric light that has turned night into twilight.
Call it the Waning Daylight Moon, the Cricket Moon, Ripening Apple Moon, Ripening Weed Seed, or Spider Web Moon. Weary Moon, for Dame Summer is getting weary, and the apple trees droop and groan under the weight of fruit in most years, Sunflower Moon, might be another good name for it. or even Summer's End Moon. It is usually easy for me to find a personal name for the full moon, but not this time.