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Solar Elevation Angle
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of the Sun and the (idealized) Horizon . It can be calculated, to a good approximation, using the
following formula:
:
\, \sin heta_\mathrm{s} = \cos h \cos \delta \cos \Phi + \sin \delta \sin \Phi

where
  • \, heta_\mathrm{s} is the ''solar elevation angle''

  • \, h is the Hour Angle of the present time

  • \, \delta is the current Sun Declination

  • \, \Phi is the local Latitude



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