Spica, however, is a star of the first magnitude, and lies a little east of the place of the autumnal equinox.
Albategni, the Arabian astronomer, observes the autumnal equinox, September 19th.
At the vernal and at the autumnal equinox I take a good meal, and that lasts me for half a year.
This fish resorts here in vast numbers, and is in season after the autumnal equinox, and continues so till the ice begins to run.
As each year started anew on the autumnal equinox, the dates varied a little from those here given.
The autumnal equinox now approached, and the Euboean gulf, called Coela, is reckoned dangerous by mariners.
In Norfolk, many are caught at the autumnal equinox in the fowlers' nets.
Now, this is just the case of the moon at the time of the harvest home, about the time of the autumnal equinox.
And after the autumnal equinox, he proceeded onwards on his way to Amida.
Harvest-Moon, the full moon which in our latitude, at the autumnal equinox, rises for an evening or two about the same time.
late 14c., from Old French equinoce (12c.) or directly from Medieval Latin equinoxium "equality of night (and day)," from Latin aequinoctium "the equinoxes," from aequus "equal" (see equal (adj.)) + nox (genitive noctis) "night" (see night). The Old English translation was efnniht. Related: Equinoctial.
See under equinox.