Editing Culmination (section)

==The Sun==
{{main|Solar noon}}
{{See also|Sun path}}
From the [[tropics]] and [[middle latitudes]], the [[Sun]] is visible in the sky at its upper culmination (at [[solar noon]]) and invisible (below the horizon) at its lower culmination (at solar [[midnight]]). When viewed from the [[polar regions of Earth|region]] within either [[polar circle]] around the [[winter solstice]] of that hemisphere (the [[December solstice]] in the [[Arctic]] and the [[June solstice]] in the [[Antarctic]]), the Sun is below the [[horizon]] at both of its culminations.

Earth's [[subsolar point]] occurs at the point where the upper culmination of the Sun reaches the point's [[zenith]]. At this point, which moves around the [[tropics]] throughout the year, the Sun is perceived to be directly overhead.

We apply the previous equation, {{math|''A'' {{=}} 90° − ''L'' + ''δ''}}, in the following examples. 

Supposing that the [[declination]] of the Sun is +20° when it crosses the local meridian, then the [[complementary angle]] of 70° (from the Sun to the pole) is added to and subtracted from the observer's [[latitude]] to find the solar altitudes at upper and lower culminations, respectively.
*From [[52th parallel north|52° north]], the upper culmination is at 58° above the horizon due south, while the lower is at 18° below the horizon due north. This is calculated as 52° + 70° = 122° (the [[supplementary angle]] being 58°) for the upper, and 52° − 70° = −18° for the lower.
*From [[80th parallel north|80° north]], the upper culmination is at 30° above the horizon due south, while the lower is at 10° above the horizon ([[midnight sun]]) due north.