Night Light of Hengyang (Hunan) from space (China) Src. Average luminocity for 10x10km area is 65.9425% and for 50x50km: 8.0107%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
27° 30' 53.3" North, 111° 54' 56.7" East
26° 53' 22.1" North, 112° 37' 8" East
26° 15' 38.3" North, 113° 19' 19.2" East
Some cities around Hengyang sort by population:
• Xiangtan
110.4 km =68.6 mi, 14°
• Loudi
112.4 km =69.8 mi, 326°
• Leiyang
59.2 km =36.8 mi, 156°
• Xiangxiang
94.2 km =58.5 mi, 354°
• Yongfeng
73.8 km =45.9 mi, 324°
• Wuxi
82.7 km =51.4 mi, 245°
• Hongqiao
52.4 km =32.6 mi, 255°
• Bojia
79.9 km =49.6 mi, 234°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016