Noon 209005 226007378 2008-07-16T12:27:12Z Eynar 706943 /* Etymology */ better link to the same reference __NOTOC__ {{otheruses}} '''Noon''' (also '''midday''') is the hour of 12:00&nbsp;pm (1200) in an observer's local time zone, or more loosely, a time near the middle of the day when workers in many countries take a meal break. The scientific term '''[[#Solar noon|solar noon]]''' describes the moment when the sun crosses the meridian in [[apparent solar time]]. The [[antonym|opposite]] of noon is [[midnight]]. ==Etymology== The word "noon" is derived from Latin '''nona hora''', the ninth hour of the day. The Roman and Western European medieval monastic day began at 6:00&nbsp;am (0600) by modern timekeeping, so the ninth hour began at what is now 2:00&nbsp;pm (1400). In English, the meaning of the word shifted to ''midday'' by the year 1100 CE.<ref>[http://www.etymonline.com/index.php?term=noon Online Etymology Dictionary<!-- Bot generated title -->]</ref> ==Solar noon== Solar noon is the moment when the sun appears the highest in the [[sky]] (nearest [[zenith]]), compared to its positions during the rest of the day. It occurs when the Sun is [[transit (astronomy)|transit]]ting the [[astronomy|celestial]] [[meridian (astronomy)|meridian]]. This is also the origin of the terms ''[[12-hour clock|ante meridiem]]'' and ''[[12-hour clock|post meridiem]]'' as noted above. The Sun is directly overhead at solar noon at the [[equator]] on the [[equinox]]es; at [[Tropic of Cancer]] ([[latitude]] 23° 26′ 22″ N) on the June [[solstice]]; and at [[Tropic of Capricorn]] (23° 26′ 22″ S) on the December solstice. Due to the effects of the use of [[standard time]], [[daylight saving time]], and the [[equation of time]], clock noon and solar noon rarely coincide. ==See also== *[[Dipleidoscope]] *[[Midnight]] *[[12-hour clock]] ==References== <references /> ==External links== * [http://www.solar-noon.com/ Generate a solar noon calendar for your location] [[Category:Parts of a day]] [[Category:Time in astronomy]] [[gn:Asaje]] [[ay:Chika uru]] [[ca:Migdia]] [[cs:Poledne]] [[da:Middag (tidspunkt)]] [[de:Mittag]] [[es:Mediodía]] [[eu:Eguerdi]] [[fr:Midi (zénith)]] [[gl:Mediodía]] [[ko:한낮]] [[id:Siang]] [[is:Hádegi]] [[ja:正午]] [[no:Middag (tidspunkt)]] [[nn:Middag]] [[nrm:Médi]] [[pl:Południe (12:00)]] [[pt:Meio-dia]] [[qu:Chawpi p'unchaw]] [[ru:Полдень]] [[simple:Noon]] [[sk:Poludnie]] [[sl:Poldne]] [[fi:Keskipäivä]] [[sv:Middag (tid)]] [[wa:Nonne]] [[vls:Noene]] [[zh-yue:中午]] [[bat-smg:Puokaitis]] [[zh:中午]]