What does autumnal equinox mean?

autumnal equinox meaning in General Dictionary

September 22

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  • (astronomy) the equinoctial point that is based on the constellation of Virgo

Sentence Examples with the word autumnal equinox

All that is certainly known about the antiquity of the sieu is that they were well established in the 3rd century B.C. Their initial point at the autumnal equinox marked by Kio (Spica Virginis) suits a still later date; and there is no valid evidence that the modern series resulted from the rectification of an older superannuated arrangement, analogous to the Krittika sequence of nakshatras.

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