
1) Season openers 2) Spring and fall events 3) There are two every year
Found on
https://www.crosswordclues.com/clue/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

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
No exact match found.