Solar Zenith Angle
Technical Details & Mathematical Formulation
At solar noon with the sun directly overhead, the zenith angle is 0. At sunrise and sunset, the true geometric solar zenith angle is 90 (or 90.833 accounting for atmospheric refraction and solar disc semi-diameter).
\cos \theta_z = \sin \phi \sin \delta + \cos \phi \cos \delta \cos hTest real-world coordinates and calculate live results in browser.
Related Geodetic Concepts
People Also Ask About Solar Zenith Angle
Answers to key questions, technical definitions, and practical geodetic applications.
QWhat does the term "Solar Zenith Angle" mean?
The solar zenith angle is the angular distance between the Sun center and the local celestial zenith (directly overhead). It is the complement of solar elevation (90 - elevation).
QWhat is the mathematical or technical basis of Solar Zenith Angle?
At solar noon with the sun directly overhead, the zenith angle is 0. At sunrise and sunset, the true geometric solar zenith angle is 90 (or 90.833 accounting for atmospheric refraction and solar disc semi-diameter).
QHow do professionals use Solar Zenith Angle in GIS and surveying?
Cartographers, geospatial software engineers, and navigators utilize Solar Zenith Angle to guarantee mathematical precision and consistent spatial reference frames across global datasets.
QWhich category of geodesy does Solar Zenith Angle belong to?
This concept is cataloged under the "Astronomy & Solar" domain in the GeoMap Suite cartographic knowledge index.
QCan I test or calculate Solar Zenith Angle on GeoMap Suite?
Yes. You can test live coordinates and see practical examples using our companion Sun Position Calculator tool.
QWhat are key concepts related to Solar Zenith Angle?
Directly related terms include Subsolar Point, Solar Azimuth Angle.