Night Light of Rockville (Maryland) from space (United States) Src. Average luminocity for 10x10km area is 85.8003% and for 50x50km: 62.4054%.
Square area 10x10 km:
 26.3%
 26.3% 23.86%
 23.86% 11.85%
 11.85% 18.67%
 18.67% 17.21%
 17.21% 2.11%
 2.11% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 18.56%
 18.56% 13.77%
 13.77% 7.88%
 7.88% 9.34%
 9.34% 9.89%
 9.89% 8.1%
 8.1% 4.46%
 4.46% 4.08%
 4.08% 5.19%
 5.19% 7.61%
 7.61% 11.12%
 11.12%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 37' 39.6" North, 77° 51' 21.2" West
39° 5' 2.4" North, 77° 9' 9.9" West
38° 32' 10" North, 76° 26' 58.7" West
Some cities around Rockville sort by population:
• Gaithersburg
		7.8 km =4.8 mi,  327°
327°
• Aspen Hill
		6.9 km =4.3 mi,  94°
94°
• Potomac
		8.8 km =5.5 mi,  213°
213°
• North Bethesda
		5.3 km =3.3 mi,  146°
146°
• Redland
		6.9 km =4.3 mi,  6°
6°
• North Kensington
		9.1 km =5.7 mi,  130°
130°
• Leisure World
		7.5 km =4.7 mi,  74°
74°
• Rossmoor
		7.4 km =4.6 mi,  72°
72°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016