Night Light of Beihai (Guangxi) from space (China) Src. Average luminocity for 10x10km area is 65.7178% and for 50x50km: 11.7969%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
22° 8' 10" North, 108° 23' 48.8" East
21° 28' 60" North, 109° 6' 0" East
20° 49' 39.4" North, 109° 48' 11.3" East
Some cities around Beihai sort by population:
• Zhongshan
153.5 km =95.4 mi, 96°
• Zhanjiang
130.6 km =81.2 mi, 99°
• Qinzhou
73.2 km =45.5 mi, 318°
• Lianjiang
123.5 km =76.7 mi, 81°
• Huazhou
154.3 km =95.9 mi, 83°
• Móng Cái, VN
117.4 km =72.9 mi, 272°
• Lianzhou
22.9 km =14.2 mi, 27°
• Yashan
117.7 km =73.1 mi, 47°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016