What is equinox?

  • (noun): (astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic.
    Synonyms: equinoctial point
    See also — Additional definitions below


An equinox occurs twice a year (around 20 March and 22 September), when the tilt of the Earth's axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth's equator. The term equinox can also be used in a broader sense, meaning the date when such a passage happens. The name "equinox" is derived from the Latin aequus (equal) and nox (night), because around the equinox, night and day are about equal length.

Read more about Equinox.

Some articles on equinox:

The Blue Equinox
... The Blue Equinox, officially known as The Equinox Volume III, Number I, is a book written by the English occultist Aleister Crowley, the founder of Thelema ...
Equinoxes of Other Planets
... Equinox is a phenomenon that can occur on any planet with a significant tilt to its rotational axis ... Most dramatic of these is Saturn, where the equinox places its normally majestic ring system edge-on facing the Sun ... When seen from above—a view seen by humans during an equinox for the first time from the Cassini space probe in 2009—they receive very little sunshine, indeed more planetshine than ...
Bahá'í Naw-Rúz - Date
... defines Naw-Rúz as the Bahá'í day on which the vernal equinox occurs ... Since Bahá'í days start at sundown, if the equinox occurred just before sunset, the day which started on the previous sunset is Naw-Rúz ... outside the Middle East, regardless of exactly when the equinox occurs ...
Libra (DC Comics) - In Other Media - Television
... In the animated series Batman The Brave and the Bold, there is a character called Equinox (voiced by Oded Fehr) with similarities to Libra including the interest ... An orphan boy raised from birth by the Lords of Chaos and Order, Equinox was granted powers by both, and charged with the task of supporting the balance ... Question (an agent of justice) at the same time to keep balance, but Batman intervenes and Equinox faces him for the first time ...
List Of Batman: The Brave And The Bold Characters - Villains - Equinox - Batman Revenge Squad
... are a group of robots who first appeared in "Time Out for Vengeance." The fragment of Equinox ended up in the far future and inserted itself into a supercomputer where it created the Batman Revenge Squad in order to ...

More definitions of "equinox":

  • (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.