Equinox

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Related to Equinoxes: precession of the equinoxes

EQUINOX. The name given to two periods of the year when the days and nights are equal; that is, when the space of time between the rising and setting of the sun is one half of a natural day. Dig. 43, 13, 1, 8. Vide Day.

References in periodicals archive ?
This happens because during the spring and fall equinoxes the (https://www.
There are two equinoxes in a year, the other is called vernal equinox, which happens in March.
It had been found earlier [2, 5, 6], in studying the variation of shape of the successive sequences of histograms obtained at vernal and autumnal equinoxes, the sequences related to "homonymous" equinoxes (vernal-and-vernal or autumnal-and-autumnal ones) display the similarity higher than that of "heteronymous" equinoxes.