Night Light of Fort Knox (Kentucky) from space (United States) Src. Average luminocity for 10x10km area is 43.0049% and for 50x50km: 14.3047%.
Square area 10x10 km:
 6.98%
 7.95%
 4.87%
 2.92%
 8.28%
 8.6%
 3.08%
 5.03%
 18.18%
 30.68%
 3.41%Square area 50x50 km:
 1.38%
 2.02%
 1.97%
 1.93%
 2.34%
 2.4%
 2.18%
 2.59%
 4.66%
 8.69%
 69.84%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 26' 38.1" North, 86° 40' 0.3" West
37° 53' 28.1" North, 85° 57' 49.1" West
37° 20' 2.9" North, 85° 15' 37.8" West
Some cities around Fort Knox sort by population:
• Elizabethtown
		23.8 km =14.8 mi, 
157°
• Pleasure Ridge Park
		29.7 km =18.5 mi, 
18°
• Valley Station
		25.8 km =16 mi, 
18°
• Radcliff
		5.8 km =3.6 mi, 
167°
• Shepherdsville
		24.3 km =15.1 mi, 
63°
• Fairdale
		29.8 km =18.5 mi, 
37°
• Hillview
		31.4 km =19.5 mi, 
50°
• Vine Grove
		9.1 km =5.7 mi, 
189°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016