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On a side note, the black moon is kind of the opposite of your blue moon, which are the full moon. The seasonal blue moon is of course the third full moon in a particular season when a particular season has four full moons. Or the same with the monthly blue moon, the second full moon in one particular month. So two definitions. Both of these unofficial astronomical terms started in the 1940s time period, a little bit later for the black moon. They were definitely termed, well mostly folklorish in origin and later in the 20th century there. They are not official astronomical terms, but tell something to think about and have fun with, that's for sure. That's it for that moment for this evening. This is KI0 AR Net Control for Colorado Astronomy Net.