Night Light of Songyang (Henan) from space (China) Src. Average luminocity for 10x10km area is 25.6434% and for 50x50km: 3.8136%.
Square area 10x10 km:
0%
1.92%
6.12%
4.72%
3.32%
4.02%
3.15%
7.69%
4.02%
29.2%
35.84%Square area 50x50 km:
0.04%
0.27%
0.4%
0.5%
0.36%
0.64%
0.57%
1.4%
0.93%
3.05%
91.85%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
35° 1' 58.9" North, 112° 19' 29.8" East
34° 27' 19" North, 113° 1' 41" East
33° 52' 24.6" North, 113° 43' 52.3" East
Some cities around Songyang sort by population:
• Zhengzhou
66 km =41 mi,
59°
• Luoyang
58.4 km =36.3 mi,
295°
• Pingdingshan
83.6 km =51.9 mi,
162°
• Jiaozuo
89.2 km =55.4 mi,
12°
• Yingchuan
51.6 km =32.1 mi,
129°
• Xiangcheng Chengguanzhen
79.3 km =49.3 mi,
148°
• Xixiang
80.1 km =49.8 mi,
349°
• Zijinglu
34.3 km =21.3 mi,
351°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016