Night Light of Ganghwa-gun (Incheon) from space (South Korea) Src. Average luminocity for 10x10km area is 50.5935% and for 50x50km: 28.7119%.
Square area 10x10 km:
Square area 50x50 km:
Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
38° 18' 4" North, 125° 46' 56.8" East
37° 44' 50" North, 126° 29' 8" East
37° 11' 21" North, 127° 11' 19.3" East
Some cities around Ganghwa-gun sort by population:
• Seoul
47.8 km =29.7 mi, 114°
• Incheon
37.7 km =23.4 mi, 149°
• Goyang-si
32.4 km =20.1 mi, 108°
• Bucheon-si
38.1 km =23.7 mi, 136°
• Kwangmyŏng
45 km =28 mi, 131°
• Kaesŏng, KP
25.6 km =15.9 mi, 13°
• Munsan
29.1 km =18.1 mi, 64°
• Yŏnan-ŭp, KP
33.7 km =20.9 mi, 302°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016