Night Light of Adelphi (Maryland) from space (United States) Src. Average luminocity for 10x10km area is 94.6282% and for 50x50km: 79.0737%.
Square area 10x10 km:
 48.05%
 48.05% 26.62%
 26.62% 18.34%
 18.34% 6.82%
 6.82% 0.16%
 0.16% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 25.72%
 25.72% 20.38%
 20.38% 11.08%
 11.08% 13.33%
 13.33% 9.76%
 9.76% 7.51%
 7.51% 4.03%
 4.03% 3.54%
 3.54% 2.23%
 2.23% 2.16%
 2.16% 0.24%
 0.24%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 32' 50.9" North, 77° 40' 30.2" West
39° 0' 11.4" North, 76° 58' 18.9" West
38° 27' 16.8" North, 76° 16' 7.7" West
Some cities around Adelphi sort by population:
• Silver Spring
		4.9 km =3 mi,  253°
253°
• Chillum
		4.7 km =2.9 mi,  200°
200°
• College Park
		3.9 km =2.4 mi,  129°
129°
• Langley Park
		1.8 km =1.1 mi,  206°
206°
• Takoma Park
		4.2 km =2.6 mi,  227°
227°
• White Oak
		4.5 km =2.8 mi,  335°
335°
• Four Corners
		4 km =2.5 mi,  298°
298°
• Hillandale
		2.6 km =1.6 mi,  355°
355°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016