Night Light of Fort Washington (Maryland) from space (United States) Src. Average luminocity for 10x10km area is 52.5238% and for 50x50km: 55.3036%.
Square area 10x10 km:
 1.53%
 1.53% 1.19%
 1.19% 11.05%
 11.05% 13.78%
 13.78% 16.67%
 16.67% 13.61%
 13.61% 8.16%
 8.16% 9.18%
 9.18% 21.26%
 21.26% 3.57%
 3.57% 0%
 0%Square area 50x50 km:
 15.92%
 15.92% 11.56%
 11.56% 8.2%
 8.2% 9.8%
 9.8% 7.29%
 7.29% 5.23%
 5.23% 3.86%
 3.86% 4.44%
 4.44% 5.81%
 5.81% 8.06%
 8.06% 19.83%
 19.83%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 15' 14.1" North, 77° 43' 34.2" West
38° 42' 26.4" North, 77° 1' 22.9" West
38° 9' 23.6" North, 76° 19' 11.7" West
Some cities around Fort Washington sort by population:
• Woodlawn
		9.6 km =6 mi,  276°
276°
• Hybla Valley
		6.9 km =4.3 mi,  310°
310°
• Groveton
		8.6 km =5.3 mi,  321°
321°
• Mount Vernon
		6.8 km =4.2 mi,  276°
276°
• Accokeek
		4.4 km =2.7 mi,  185°
185°
• Friendly
		6.3 km =3.9 mi,  37°
37°
• Bryans Road
		9.9 km =6.2 mi,  205°
205°
• Belle Haven
		9.3 km =5.8 mi,  338°
338°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016