Night Light of Haikou (Hainan) from space (China) Src. Average luminocity for 10x10km area is 87.5357% and for 50x50km: 26.1694%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
20° 42' 17.9" North, 109° 38' 18.8" East
20° 2' 45" North, 110° 20' 30" East
19° 23' 2.1" North, 111° 2' 41.3" East
Some cities around Haikou sort by population:
• Zhanjiang
137.4 km =85.4 mi, 0°
• Qionghai
90.2 km =56 mi, 171°
• Xiuying
7.1 km =4.4 mi, 225°
• Wenchang
64 km =39.8 mi, 138°
• Qiongshan
4.6 km =2.9 mi, 163°
• Xucheng
36.4 km =22.6 mi, 329°
• Jinjiang
49.6 km =30.8 mi, 224°
• Lincheng
70.2 km =43.6 mi, 257°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016