Night Light of Danville (California) from space (United States) Src. Average luminocity for 10x10km area is 36.5816% and for 50x50km: 40.7399%.
Square area 10x10 km:
 2.04%
 3.91%
 0.17%
 3.06%
 6.63%
 13.27%
 15.99%
 6.29%
 13.1%
 26.53%
 9.01%Square area 50x50 km:
 7.93%
 7.64%
 2%
 5.11%
 6.75%
 8.34%
 6.79%
 4.8%
 13.08%
 17.02%
 20.53%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 22' 29.7" North, 122° 42' 11.1" West
37° 49' 17.7" North, 121° 59' 59.9" West
37° 15' 50.7" North, 121° 17' 48.6" West
Some cities around Danville sort by population:
• San Ramon
		5 km =3.1 mi, 
157°
• Walnut Creek
		11 km =6.8 mi, 
328°
• Lafayette
		12.6 km =7.8 mi, 
304°
• Moraga
		11.5 km =7.1 mi, 
277°
• Alamo
		4.3 km =2.7 mi, 
318°
• Blackhawk
		8.1 km =5 mi, 
90°
• Waldon
		12.6 km =7.8 mi, 
337°
• Saranap
		9.7 km =6 mi, 
316°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016