Night Light of Grand Island (Nebraska) from space (United States) Src. Average luminocity for 10x10km area is 64.233% and for 50x50km: 5.1071%.
Square area 10x10 km:
 14.46%
 16.5%
 11.05%
 8.5%
 8.16%
 6.46%
 4.76%
 7.65%
 13.61%
 8.67%
 0.17%Square area 50x50 km:
 0.56%
 0.8%
 0.93%
 0.72%
 0.67%
 0.5%
 0.48%
 0.89%
 1.38%
 3.22%
 89.85%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 27' 14.9" North, 99° 2' 42.5" West
40° 55' 30" North, 98° 20' 31.2" West
40° 23' 29.8" North, 97° 38' 20" West
Some cities around Grand Island sort by population:
• Kearney
		67.1 km =41.7 mi, 
248°
• Hastings
		37.9 km =23.5 mi, 
185°
• Columbus
		98.9 km =61.5 mi, 
55°
• Lexington
		118.8 km =73.8 mi, 
262°
• York
		63.4 km =39.4 mi, 
95°
• Seward
		104.5 km =64.9 mi, 
91°
• Crete
		120.9 km =75.1 mi, 
105°
• Holdrege
		102.1 km =63.4 mi, 
238°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016