Abstract
The SolarLunarTracking.unitypackage package for Unity 5 provides astronomically accurate solar and lunar tracking. The tracking is used to position lights and objects representing the sun and moon. The color temperature of the sun light is adjusted as a function of elevation. This project depends on the SimTimeControls package published by the VTL. To use this package first add the SimTimeControls prefab to your scene. Then place the SolarLunarTracking prefab in your scene. Position the prefab such that it is centered on your terrain. In the inspector specify your location and UTM timezone in the fields provided under the "Solar Lunar Tracking Geolocation" component of the SolarLunarTracking GameObject. In your lighting settings set the SolarLunarTracking/Sun/Light as the Sun. (Unity seems to forget this. If you can't see the Sun double check this.) Make sure the clipping distance of your main camera is beyond ~8000 meters to ensure the moon is visible. Or move the Plane under Moon to within your viewing range.