Difference: MoonTables (8 vs. 9)

Revision 92018-01-03 - WilliamSeligman

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META TOPICPARENT name="WilliamSeligman"

Moon Tables

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  For my part, I like the original definition better. It relates one astronomical event, a full moon, with another astronomical marker, the solstices and the equinoxes. The "new" definition uses an imposed time scheme, the Gregorian calendar. So from now on, I'm going by the old definition.
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If you prefer the newer definition, or you want to look for a "black moon" (the second new moon in a month)... well, you've got eyes and you've got a mind. Look for yourself in the table above. For either definition, consult this chart from Sky and Telescope for the dates of the blue moons until 2020; after that there's this chart which will take you to the end of the century.
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If you prefer the newer definition, or you want to look for a "black moon" (the second new moon in a month)... well, you've got eyes and you've got a mind. Look for yourself in the table above. For either definition, consult this chart from Sky and Telescope for the dates of the blue moons until 2020; after that there's this chart which will take you to the end of the century.
 
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There are other definitions of a "blue moon." Someone wrote me with an obscure astrological definition: the second full moon that occurs in the same sign. There is also a drink called the Blue Moon, but I have found more than one recipe. The moon can appear blue as a result of rare meteorological conditions. Of course, there's always the conversational meaning of "a rare occurrence."
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There are other definitions of a "blue moon." Someone wrote me with an obscure astrological definition: the second full moon that occurs in the same sign. There is also a drink called the Blue Moon, but I have found more than one recipe. The moon can appear blue as a result of rare meteorological conditions. Of course, there's always the conversational meaning of "a rare occurrence."
  For my part, as you can read below, I have no plans to research other definitions of the term. I only plan to revise this web page further once in a blue moon.
 
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