southward equinox

noun

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.

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Meanings

nounsouthward equinox (usually uncountable, plural southward equinoxes)

plural southward equinoxes

  1. uncountableusuallyThe 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.
Cite this entry
APA

southward equinox. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/southward%20equinox

MLA

“southward equinox.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/southward%20equinox. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “southward equinox,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/southward%20equinox.

Source: southward equinox on Wiktionary, CC BY-SA 4.0.