Night Light of Jiuquan (Gansu) from space (China) Src. Average luminocity for 10x10km area is 48.875% and for 50x50km: 8.0023%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
40° 16' 54.1" North, 97° 48' 51.3" East
39° 44' 35.4" North, 98° 31' 2.5" East
39° 12' 1.5" North, 99° 13' 13.8" East
Some cities around Jiuquan sort by population:
• Xining
447.5 km =278.1 mi, 140°
• Wuwei
409.6 km =254.5 mi, 119°
• Baiyin
608.6 km =378.2 mi, 125°
• Jinchang
345.9 km =214.9 mi, 113°
• Hami
541.5 km =336.5 mi, 309°
• Jiayuguan
21.2 km =13.2 mi, 290°
• Zhangye
189.1 km =117.5 mi, 118°
• Laojunmiao
67.7 km =42.1 mi, 278°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016