Solar azimuth angle

The solar azimuth angle is the azimuth angle of the sun. It can be calculated, to a good approximation, using the following formulas:

<math>

\, \sin \phi_\mathrm{s} = \frac{\sin h \cos \delta}{\cos \theta_\mathrm{s}} <math>

<math>

\, \cos \phi_\mathrm{s} = \frac{\cos h \cos \delta \sin \Phi – \sin \delta \cos \Phi}

                              {\cos \theta_\mathrm{s}}

<math> where

• <math>\, \theta_\mathrm{s}<math> is the solar elevation angle
• <math>\, h<math> is the hour angle of the present time
• <math>\, \delta<math> is the current sun declination
• <math>\, \Phi<math> is the local latitude

See also

• Horizontal coordinate system
• Sun
• Sunrise
• Sunset