
1) American erotic novel 2) American monster movie 3) Biannual celestial event 4) Character created by Gil Kane 5) Composition by John Coltrane 6) Cosmic time 7) Day-night tie 8) Eclipse technology 9) Event heralding spring 10) Fall time 11) French word used in English 12) March 21 occurrence 13) March 21 or September 23
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https://www.crosswordclues.com/clue/equinox

Point at which the Sun?s apparent path (ecliptic) intersects the celestial equator.
Found on
http://jot101.com/2015/05/a-z-of-science-fiction-words/

Either of the two points of intersection of the Sun's apparent annual path and the plane of the Earth's equator. In the Northern Hemisphere the spring (vernal) equinox falls on or about 21 March, and the autumnal equinox on or about 22 September.
Found on
http://nsidc.org/arcticmet/glossary/equinox.html

• (n.) Equinoctial wind or storm. • (n.) The time when the sun enters one of the equinoctial points, that is, about March 21 and September 22. See Autumnal equinox, Vernal equinox, under Autumnal and Vernal.
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http://thinkexist.com/dictionary/meaning/equinox/

Either of the two instants during the year when the Sun is directly over the Earth's equator. In the spring in the Northern Hemisphere, the vernal equinox occurs around March 21st, and in the fall the autumnal equinox happens around September 21st (although the specific dates vary slightly from year to year.) At the time of the equinoxes, the lengt...
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http://www.astrosociety.org/education/publications/tnl/14/14.html

The point at which the ecliptic intersects the celestial equator. Days and nights are most nearly equal in duration. In the Northern Hemisphere, the vernal equinox falls on or about March 20 and the autumnal equinox on or about September 22.
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http://www.avon-weather.com/glossary.html

(from the article `Figes, Eva`) ...for various publishing companies until 1967, when she became a full-time writer. Her poetic novels explore the inner lives of the characters, ...
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http://www.britannica.com/eb/a-z/e/39

either of the two moments in the year when the Sun is exactly above the equator and day and night are of equal length; also, either of the two ... [6 related articles]
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http://www.britannica.com/eb/a-z/e/39

Roughly March 22 and September 22, when day and night are equal in length. They are celebrated (in the northern hemisphere) as the Sabbats of Eostara and Mabon.
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http://www.encyclo.co.uk/local/20074

The equinoxes are the two points at which the ecliptic intersects with the celestial equator. The Vernal equinox (or First Point of Aries) is where the ecliptic crosses the celestial equator from south to north, the Sun reaches this point around the 21st March. The opposite equinox, the autumnal equinox, is where the ecliptic crosses the celestial ...
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http://www.encyclo.co.uk/local/20448

Event which occurs twice a year when the sun is exactly over the Earth`s center, the Equator. On this day the hours of light and darkness are equal in length.
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http://www.encyclo.co.uk/visitor-contributions.php

The equinoxes are times at which the center of the Sun is directly above the Earth's equator. The day and night would be of equal length at that time, if the Sun were a point and not a disc, and if there were no atmospheric refraction. Given the apparent disc of the Sun, and the Earth's atmospheric refraction, day and night actually become equal at a point within a few days of each equinox. The vernal equinox marks the beginning of spring in the northern hemisphere, and the autumnal equinox mark…...
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http://www.encyclo.co.uk/visitor-contributions.php
E'qui·nox noun [ Middle English
equinoxium ,
equenoxium , Latin
aequinoctium ;
aequus equal +
nox ,
noctis , night: confer French
équinoxe . See
Equal , and
Night .]
1. The time when the sun enters one of the equinoctial poin...
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http://www.encyclo.co.uk/webster/E/60

An equinox is the precise time when the sun enters one of the equinoctial points, or the first point of Aries about the 21st of March, and the first point of Libra about the 23rd of September, making the day and night of equal length all over the world. At all other times the lengths of the day and of the night are unequal, their difference being t...
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http://www.probertencyclopaedia.com/browse/GE.HTM

(L: equi=equal; noce=night) the time when the length of day equals night. The vernal equinox is on 21 March, and the autumnal equinox about 22 September.
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http://www.seafriends.org.nz/books/glossary.htm

equinox Either of the two annual crossings of the equator by the sun, once in each direction, when the length of day and night are approximately equal everywhere on earth. The equinoxes occur around March 21 and September 23.
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http://www.wordinfo.info/words/index/info/view_unit/1402/

either of the two points of intersection of the sun's apparent annual path and the plane of the earth's equator; in the northern hemisphere the spring (vernal) equinox falls on or about 21 March, and the autumnal equinox on or about 22 September.
Found on
https://nsidc.org/cryosphere/glossary?page=7

occurs twice a year on a day in March and September, when the tilt of the Earth is neither towards, nor away from the sun. On these two days, the day length and night length equal 12 hours.
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https://serc.carleton.edu/eslabs/weather/glossary.html
noun either of two times of the year when the sun crosses the plane of the earth`s equator and day and night are of equal length
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https://www.encyclo.co.uk/local/20974

Either of two occasions during the year when the apparent sun's path crosses the plane of the Earth's equator. Also the date when the sun is directly overhead at noon on the equator, occurring on or around both March 21 and September 22, the former is the vernal equinox and the latter the autumnal equinox in the Northern Hemisphere and the reverse ...
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https://www.encyclo.co.uk/local/21131

March 21st and September 22nd. Twice a year when the day and night are the same amount of time all around the world.
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https://www.encyclo.co.uk/local/22784

The point at which the sun crosses the equator and day and night are each 12 hours long; the equinox occurs twice a year, in spring and fall.
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https://www.encyclo.co.uk/local/23353

The point at which the sun crosses the equator and day and night are each 12 hours long; the equinox occurs twice a year, in spring and fall.
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https://www.encyclo.co.uk/local/23362

the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21and September 22 · either of the equinoctial points.
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https://www.infoplease.com/dictionary/equinox

when the sun crosses the plane of the earth's equator
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https://www.vocabulary.com/lists/1004092
No exact match found.