How is Autumn Equinox calculated?

This event is based on the astronomical moment when the Sun crosses the celestial equator heading southward each year.

When is Autumn Equinox 2756?

Saturday, 22 September 2756

Autumn Equinox marks the astronomical point when the Sun crosses the celestial equator heading southward, signalling the beginning of autumn in the Northern Hemisphere and spring in the Southern Hemisphere.

Also known as

Autumnal Equinox
Southward Equinox

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Frequently asked questions

When is Autumn Equinox 2756?: Autumn Equinox 2756 is on Saturday, 22 September 2756.
What day of the week is Autumn Equinox 2756?: It falls on Saturday.
How is Autumn Equinox calculated?: This event is based on the astronomical moment when the Sun crosses the celestial equator heading southward each year.