Night Light of Zhangjiakou (Hebei) from space (China) Src. Average luminocity for 10x10km area is 62.4813% and for 50x50km: 9.8874%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
41° 20' 24.2" North, 114° 10' 34.8" East
40° 48' 36" North, 114° 52' 46" East
40° 16' 32.5" North, 115° 34' 57.3" East
Some cities around Zhangjiakou sort by population:
• Beijing
163.1 km =101.3 mi, 127°
• Datong
156.2 km =97.1 mi, 239°
• Jining
151 km =93.8 mi, 279°
• Mentougou
141.3 km =87.8 mi, 133°
• Fangshan
156.8 km =97.4 mi, 142°
• Changping
132.2 km =82.1 mi, 119°
• Liangxiang
159.9 km =99.4 mi, 138°
• Beichengqu
151.4 km =94.1 mi, 254°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016