Lee ebe Equinox si

[[File:Earth-lighting-equinox af.png|thumb|Equinox]]
{{solstice-equinox}}Equinox nke mbụ bụ oge n'ime oge mgbe ọmụmụ na-agafe equator nke ụwa, nke egwuregwu, na-ahụ kpọmkwem n'elu equator, kama n'ebe ugwu ma ọ bụ ndị nke equator. N'ụbọchị nke equinox, mmalite na-egosi na ọ na-ebili "n'ebe mmalite mmalite" ma tọọ "dabara ọmụmụ ọmụmụ". Nke a na-eme ugboro abụọ kwa afọ, gburugburu 20 Machị na 23 September. [Alfa dị ala 1]

. <ref>{{Cite book|title=Astronomical Almanac|publisher=[[United States Naval Observatory]]|year=2008}}</ref>Kpọmkwem nke ọma, a na-ịpọkarị equinox dị ka oge mgbe ụgbọ elu nke ụwa equator na-agafe na etiti geometric nke diski Sun. [1] [2] N'otu aka ahụ, nke a bụ oge mgbe axis ntụgharị ụwa na-adaba n'ahịrị Sun-Earth, na-adịghị ma ọ bụ ike na-amalite. N'oge a </link>, ebe ọ bụ na nwanyị (na ruo n'ókè nke nta mbara ala) na-eme ka mgbawa ụwa na -adịgasị iche iche site na ellipse zuru okè, a na-achọta equinox n'ụzọ eze site na-enwe na-enwekarị ecliptik lonjituudu uzo site n'ibelata ya. A na-mpụta oge nke equinoxes ugbu a ka ọ bụrụ mgbe ifụ ogologo geocentric nke ọmụmụ 0° na 180°.

Okwu a sitere na Latin aequinoctium</link>, site na aequus</link> (ha nhata) na nox</link> (azụ). N'ụbọchị nke equinox, ehihie na ị bụ ihe dịka oge ha nhata n'ụwa niile. Otú ọ dị, ha kpọmkwem nhata, n'ihi na angular size nke Sun, ikuku refraction, na ngwa ngwa na-agbanwe oge ogologo nke ụbọchị na-eme na ọtụtụ latitudes gburugburu equinoxes. Ogologo oge tupu echiche a nhatanha, oge ochie equatorial omenala kwuru mgbe ụfọdụ na-ebili n'ihi ihe ọmụmụ na-atọkwa ruru ụfọdụ, na n'ezie nke a na-eme n'ụbọchị kacha nso na mbara igwe omume. N'ihi ya, dị ka anwụ anwụ wuru nke ọma ma kwekọọ, oge ụbọchị bụ awa 12.

N'iji mmetụta na-ekiri ihe, ndị mmadụamụ na ọ na-egosi n'etiti ebe abụọ dị oke egwu na mbara igwe ma mgbaàmà etiti ebe dị n'etiti abụọ ahụ. Mgbe e ịhụ, a mmetụta na nke a na-eme n'ụbọchị mgbe oge nke ehihie na na-adaba na okwu ahụ bụ "equinox" sitere na Latin aequus, nke ụda "ha nhata", na nox, nke mmetụta "".

. <ref>Freeth, T., Bitsakis, Y., Moussas, X., Seiradakis, J. H., Tselikas, A., Mangou, H.,... </ref>N'ebe ugwu, vernal equinox (March) bụ akara ngosi nke oge opupu ihe ubi n'elu omenala, a na-ewerekwa ya bụ ọhụrụ nke Afọ Ọhụrụ na kalenda Asiria, Hindu, na Persian ma ọ bụ kalenda Iran, [lower- Alpha 2] mgbe equinox mgbụsị akwụkwọ (September) na-aka akara nke nkebịa. [1] Kalenda ndị Gris oge ochie ochie nke afọ ma n'oge mgbụsị akwụkwọ ma ọ bụ n'oge equinox ma ọ bụ ụfọdụ n'oge solstices. Usoro Antikythera na-ebu nje maka equinoxes na solstices