Equinoxes

are node points where the plane of the Earth`s equator cuts the ecliptic At these points, the equatorial ascending node is where the Sun passes from below to above the celestial equator at 0 Eo (0 Aries - vernal or spring equinox at around 20 March) as viewed from the northern hemisphere The equatorial descending node is where the Sun passes from a...
Found on http://www.encyclo.co.uk/local/21397

Equinoxes

spring (0 Aries) and autumn (0 Libra) the midpoints between the solstices; the days when sunrise to sunset are equal through day and night; times of energy-transition.
Found on http://www.encyclo.co.uk/local/20417

Equinoxes

The two points in the celestial sphere where the celestial equator intersects the ecliptic; also, th
Found on http://www.superglossary.com/Glossary/Science/Tides_and_Currents/
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