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Technically, the equinox is the instant when the sun appears directly over the equator, but Saturn's situation gives the rings an extended twilight.
They say that the vernal equinox, which is now, comes sooner because the year doesn't have an even number of days, at least on the calendars.— CNN Transcript Mar 20, 2008
Considering the natural difficulties of the coast, and that the equinox was at hand, the numerical disparity was not absolutely desperate.— St George's Cross
But to connect the spring new moon with the day when the sun has returned to the equinox is a more difficult and complicated matter.— The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture
And now the season of the equinox was approaching, when the monsoons change, and all the winds that sweep over these seas alter their courses.— Cord and Creese
Equinox has been looked up 389 times, favorited once, listed 52 times, and commented on once.

American Heritage Dictionary (1)
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