Editing Solar zenith angle (section)

===Caveats===
The calculated values are approximations due to the distinction between [[Latitude#Geodetic and geocentric latitudes|common/geodetic latitude]] and [[Latitude#Geocentric latitude|geocentric latitude]]. However, the two values [[Latitude#Comparison of selected types|differ]] by less than 12 [[minutes of arc]], which is less than the apparent angular radius of the sun.

The formula also neglects the effect of [[atmospheric refraction]].<ref>{{cite journal | title = On the computation of solar elevation angles and the determination of sunrise and sunset times | page = 3 | first = Harold M. | last = Woolf | journal = NASA Technical Memorandu, X-1646 | date = 1968 | location = Washington, D.C.}}</ref>