Night Light of Princeton (Kentucky) from space (United States) Src. Average luminocity for 10x10km area is 22.0442% and for 50x50km: 2.6071%.
Square area 10x10 km:
 1.53%
 4.76%
 3.91%
 1.02%
 2.89%
 3.57%
 2.04%
 5.78%
 1.02%
 17.18%
 56.29%Square area 50x50 km:
 0.11%
 0.35%
 0.4%
 0.17%
 0.35%
 0.38%
 0.34%
 0.8%
 0.44%
 1.03%
 95.63%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
37° 40' 4.3" North, 88° 35' 6.3" West
37° 6' 33.2" North, 87° 52' 55.1" West
36° 32' 47.1" North, 87° 10' 43.8" West
Some cities around Princeton sort by population:
• Hopkinsville
		44 km =27.3 mi, 
127°
• Paducah
		63.8 km =39.6 mi, 
267°
• Madisonville
		41.7 km =25.9 mi, 
54°
• Murray
		67.5 km =41.9 mi, 
214°
• Fort Campbell North
		63 km =39.1 mi, 
143°
• Morehead
		65 km =40.4 mi, 
73°
• Oak Grove
		63 km =39.1 mi, 
141°
• Central City
		70.3 km =43.7 mi, 
73°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016