🔵 Blue Moon
Typically in Variable
Meaning
A Blue Moon is not a color but a calendar quirk: it is the name given to the second full moon to occur within a single calendar month, or in an older definition, the third full moon in a season that has four. Because the lunar cycle (about 29.5 days) is shorter than most calendar months, this happens roughly once every two to three years — the origin of the phrase 'once in a blue moon.' It carries bonus, unplanned energy: an extra chance at something the regular cycle already addressed.
Folklore & Origin
The modern 'second full moon in a month' definition traces to a 1946 Sky & Telescope magazine error that misread an older Maine Farmers' Almanac seasonal rule; the mistaken definition became so popular it is now the accepted common usage.
A Simple Ritual
Because a Blue Moon is an unplanned bonus, use it for a second attempt at an intention you set at the last new or full moon that did not fully land the first time.