southward equinox

English

Pronunciation

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Noun

southward equinox (usually uncountable, plural southward equinoxes)

1. The September equinox: the moment when the sun crosses the celestial equator while heading southward, occurring on September 22–23. That would be autumnal equinox in the northern hemisphere and vernal equinox in the southern hemisphere.

Coordinate terms

• northward equinox
• northern solstice
• southern solstice