Night Light of Blackhawk (California) from space (United States) Src. Average luminocity for 10x10km area is 25.6003% and for 50x50km: 36.4346%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 22' 26.7" North, 122° 36' 39.1" West
37° 49' 14.7" North, 121° 54' 27.9" West
37° 15' 47.7" North, 121° 12' 16.6" West
Some cities around Blackhawk sort by population:
• San Ramon
7.7 km =4.8 mi, 233°
• Walnut Creek
16.8 km =10.4 mi, 304°
• Dublin
13.4 km =8.3 mi, 190°
• Danville
8.1 km =5 mi, 270°
• Alamo
11.4 km =7.1 mi, 286°
• Clayton
13.6 km =8.5 mi, 349°
• Waldon
17.5 km =10.9 mi, 312°
• Saranap
16.4 km =10.2 mi, 295°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016