What is a Black Moon?

What is the Black Moon everyone is talking about?
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You have heard the term Blue Moon, likely. A Blue Moon occurs when a calendar/solar month has 2 Full Moons. A Black Moon is when a calendar/solar month has 2 New Moons.
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This is not a sinister moon! The New Moon is always black, thats technically what makes it new!
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Because I choose ro recognize a Lunar way of being, in my belief, this is a New Moon, alike to any other.
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However a New Moon in Leo is a fun and exciting time! More on that later.