This mod replaces the default night sky with a seamless starry one. It uses the distant lights of towns to help make the horizon understandable as well as a comet just west of north to help players orient themselves.
These replace the files of the same name in your Farming Simulator application resources:
~/Farming Simulator 2013.app/Contents/Resources/data/sky/night_sky_SIDE.dds
~/Farming Simulator 2013.app/Contents/Resources/data/sky/night_sky_TOP.dds
dahemac, Bayn, Danne142