Autumnal Equinox

Looking for a brief explanation of the autumnal equinox on Saturday, September 22nd?

Autumnal equinox

For an instant, the plane of the equinoctial colure will be perpendicular to the earth’s orbital radius vector.

Simple as that!

 

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4 responses to “Autumnal Equinox

  1. Or, more simply, that time of year when the sun shines most directly into your eyes as you travel east or west in the afternoon (fall) or morning (spring)!

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