I learned what the phrase 'once in a blue moon' actually means, i don't know why it's a blue moon. But it comes from if two full moons happen within one calender month. Which only ever happens once in a blue moon or rarely anyway.
Hope some of that made sense. More learning to follow, hopefully.
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"The only way to discover the limits of the possible is to go beyond them into the impossible." - Arthur C. Clarke
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