Night Light of Kaifeng (Henan) from space (China) Src. Average luminocity for 10x10km area is 87.0989% and for 50x50km: 12.4957%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 22' 26.2" North, 113° 36' 15.5" East
34° 47' 55" North, 114° 18' 26.7" East
34° 13' 9.1" North, 115° 0' 38" East
Some cities around Kaifeng sort by population:
• Zhengzhou
60.3 km =37.5 mi, 265°
• Xuchang
94.5 km =58.7 mi, 205°
• Xinxiang
63.4 km =39.4 mi, 313°
• Jiaozuo
109.4 km =68 mi, 296°
• Yingchuan
104.8 km =65.1 mi, 227°
• Wacheng
114.5 km =71.1 mi, 170°
• Yigou
112.6 km =70 mi, 0°
• Daokou
87 km =54.1 mi, 11°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016