Meaning Of The Word Autumnal equinox

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Autumnal equinox Meaning

Autumnal equinox Definition
Autumnal equinox Definition

What's The Definition Of Autumnal equinox?

autumnal equinox in American English
noun

autumnal equinox in British English
noun: the time at which the sun crosses the plane of the equator away from the relevant hemisphere, making day and night of equal length. It occurs about Sept 23 in the N hemisphere (March 21 in the S hemisphere)

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