Night Light of Zhengzhou (Henan) from space (China) Src. Average luminocity for 10x10km area is 99.9231% and for 50x50km: 54.2569%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 20' 0.3" North, 112° 56' 43.8" East
34° 45' 28" North, 113° 38' 55" East
34° 10' 41.2" North, 114° 21' 6.3" East
Some cities around Zhengzhou sort by population:
• Xuchang
83.1 km =51.6 mi, 166°
• Kaifeng
60.3 km =37.5 mi, 85°
• Xinxiang
50.1 km =31.1 mi, 16°
• Jiaozuo
65.6 km =40.8 mi, 324°
• Yingchuan
68.3 km =42.4 mi, 194°
• Songyang
66 km =41 mi, 239°
• Xixiang
84.4 km =52.4 mi, 302°
• Zijinglu
61.9 km =38.5 mi, 270°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016