autumnal equinox

E2162237 UNEXPLORED

The autumnal equinox is the astronomical event in late September (Northern Hemisphere) or late March (Southern Hemisphere) when day and night are approximately equal in length, marking the beginning of autumn.

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All labels observed (1)

Label	Occurrences
autumnal equinox canonical	1

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

summer solstice → precedes → autumnal equinox ⓘ