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Spring equinox: Difference between revisions

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* [[March equinox]], the Spring equinox in the northern hemisphere
* [[March equinox]], the Spring equinox in the northern hemisphere
* [[Equinox]], the vernal equinox or equinox applicable worldwide is the point on the celestial sphere defined as the [[ascending node]] (northward) of the [[ecliptic]] (and Earth) on the [[celestial equator]] and similar nodes in other [[celestial coordinate system]]s, equatorial, ecliptic, or galactic.<ref>{{citation |editor-last1=Urban |editor-first1=Sean E. |editor-last2=Seidelmann |editor-first2=P. Kenneth |title=Explanatory Supplement to the Astronomical Almanac |edition=3rd |publisher=University Science Books |year=2013 |page=641 |isbn=978-1-891389-85-6}}</ref>
* [[Equinox (celestial coordinates)]], the vernal equinox or equinox applicable worldwide is the point on the celestial sphere defined as the [[ascending node]] (northward) of the [[ecliptic]] (and Earth) on the [[celestial equator]] and similar nodes in other [[celestial coordinate system]]s, equatorial, ecliptic, or galactic.<ref>{{citation |editor-last1=Urban |editor-first1=Sean E. |editor-last2=Seidelmann |editor-first2=P. Kenneth |title=Explanatory Supplement to the Astronomical Almanac |edition=3rd |publisher=University Science Books |year=2013 |page=641 |isbn=978-1-891389-85-6}}</ref>
* [[September equinox]], the Spring equinox in the southern hemisphere
* [[September equinox]], the Spring equinox in the southern hemisphere



Revision as of 17:19, 15 May 2020

Spring equinox or Vernal equinox or variations may refer to:

Other uses

See also

References

  1. ^ Urban, Sean E.; Seidelmann, P. Kenneth, eds. (2013), Explanatory Supplement to the Astronomical Almanac (3rd ed.), University Science Books, p. 641, ISBN 978-1-891389-85-6