Basic Earth-Sun Angle

Solar AnglesDescribe the sun position relative to a vertical surface

Earth Angle

1.Angle of Latitude (Φ)2.Declination (δ)3.Hour Angle (ω)

2.Declination (δ)

3.Hour Angle (ω)

Sun Angle

1. Inclination Angle (Altitude) ()2. Zenith Angle (θz)3. SolarAzimuth Angle (γs)

Surface Angle

1.Surface Azimuth Angle (γ)2.Tilt Angle or Slope (β)3. Angle of Incidence (θ)