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Lunar eclipse
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=== Selenelion === [[File:Lunar eclipse at sunrise Minneapolis October 2014.png|thumb|[[October 2014 lunar eclipse]] viewed from [[Minneapolis]] during [[sunrise]] on 8 October 2014. Both the Moon and Sun were visible at that time.<ref>{{Cite web |title=Day and Night World Map |url=https://www.timeanddate.com/worldclock/sunearth.html?day=8&month=10&year=2014&hour=7&min=25&sec=0&n=159&ntxt=Minneapolis&earth=0 |access-date=1 November 2023 |website=www.timeanddate.com |language=en}}</ref>]] A ''selenelion'' or ''selenehelion'', also called a ''horizontal eclipse'', occurs where and when both the Sun and an eclipsed Moon can be observed at the same time. The event can only be observed just before [[sunset]] or just after [[sunrise]], when both bodies will appear just above opposite [[horizon]]s at nearly [[opposition (planets)|opposite points]] in the sky. A selenelion occurs during every total lunar eclipse—it is an experience of the ''observer'', not a planetary ''event'' separate from the lunar eclipse itself. Typically, observers on Earth located on high mountain ridges undergoing [[false sunrise]] or [[false sunset]] ''at the same moment of a total lunar eclipse'' will be able to experience it. Although during selenelion the Moon is completely within the Earth's umbra, both it and the Sun can be observed in the sky because [[atmospheric refraction]] causes each body to [[Mirage#Superior mirage|appear higher]] (i.e., more central) in the sky than its true geometric planetary position.<ref>{{Cite web |author=Kelly Beatty |title=In Search of Selenelion |date=26 June 2010 |url=http://www.skyandtelescope.com/community/skyblog/observingblog/97224024.html |website=[[Sky & Telescope]] |url-status=dead |archive-url=https://web.archive.org/web/20111220123836/http://www.skyandtelescope.com/community/skyblog/observingblog/97224024.html |archive-date=20 December 2011 |access-date=8 December 2011}}</ref>
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