autumnal equinox
English
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Pronunciation
[edit]Audio (Southern England): (file)
Noun
[edit]autumnal equinox (plural autumnal equinoxes)
- (astronomy) The moment when the sun appears to cross the celestial equator while tilting away from the observer, taking place in September in the northern hemisphere and March in the southern hemisphere.
Synonyms
[edit]Coordinate terms
[edit]Translations
[edit]moment
point
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