| Altitude | Solar Altitude Angle | 
| AST | Apparent Solar Time | 
| Azimuth | Solar Azimuth Angle | 
| DayLength | Day Length | 
| DayOfYear | Day of year | 
| Declination | Declination Angle | 
| DiffuseRadiation | Solar Diffuse Radiation on a Surface | 
| DiffusionFactor | Atmospheric Diffusion Factor | 
| DirectRadiation | Solar Direct Beam Radiation on Surface | 
| EOT | Equation of time | 
| Extraterrestrial | Solar Extraterrestrial Radiation | 
| ExtraterrestrialNormal | Normal Extraterrestrial Solar Radiation | 
| HourAngle | Solar Hour Angle | 
| Incidence | Solar Incidence Angle | 
| LST | Local Standard Time | 
| OpenRadiation | Open Sky Solar Radiation | 
| Solar | Calculating Solar Variables | 
| SolarConstant | Solar Constant | 
| Sunrise | Sunrise Time | 
| Sunset | Sunset Time | 
| Transmittance | Atmospheric Transmittance |