0 either of the two occasions in the year when the centre of the sun is directly above the Equator, and day and night are approximately equal in length: --
1 either of the two times during the year when the sun crosses the equator and day and night are of equal length, about March 21st and September 23rd --
He, in addition, alluded to how the sun, in his own model, strayed from the zodiac at the equinoxes.
It has also been suggested that the ballgame is associated with different moments of the sun's apparent journey through the heavens: equinoxes and solstices.
The time between periastron and vernal equinox is a variable quantity, however, because orbital speed depends on orbital longitude as well as eccentricity.
These are, firstly, those where the adjective occurs only with a restricted set of heads - recall the extreme case of vernal equinox.
Before the autumnal equinox, its body is not fully mature, so it is cared for in quiet with ample food.
We do not understand the biological significance of the equinox in this context, since days become constantly longer after the winter solstice.
This would mean that, certainly, those collateral-adjective constructions are lexical where the adjective collocates with a single noun only (vernal equinox).
At the time when the two poles abide at the equinox points, the two motions will intersect at a right angle.
