Night Light of Darmstadt (Hesse) from space (Germany) Src. Average luminocity for 10x10km area is 45.389% and for 50x50km: 21.0423%.
Square area 10x10 km:
 11.63%
 11.1%
 2.94%
 5.75%
 3.88%
 3.07%
 2.81%
 4.28%
 22.86%
 23.93%
 7.75%Square area 50x50 km:
 3.47%
 3.84%
 1.73%
 2.01%
 2.39%
 2.18%
 2.82%
 3.59%
 8.42%
 17.15%
 52.4%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 19' 21.8" North, 7° 56' 49.7" East
49° 52' 18" North, 8° 39' 1" East
49° 24' 59" North, 9° 21' 12.2" East
Some cities around Darmstadt sort by population:
• Griesheim
		5.7 km =3.5 mi, 
257°
• Pfungstadt
		8.1 km =5 mi, 
204°
• Weiterstadt
		5.7 km =3.5 mi, 
309°
• Ober-Ramstadt
		8.4 km =5.2 mi, 
122°
• Büttelborn
		9.8 km =6.1 mi, 
291°
• Roßdorf
		8.1 km =5 mi, 
99°
• Egelsbach
		10.7 km =6.6 mi, 
5°
• Erzhausen
		9.3 km =5.8 mi, 
358°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016