Night Light of Kupjansk (Kharkiv) from space (Ukraine) Src. Average luminocity for 10x10km area is 2.365% and for 50x50km: 0.1157%.
Square area 10x10 km:
 0%
 0%
 0%
 0%
 0.53%
 0.8%
 0.94%
 1.47%
 1.07%
 1.34%
 93.85%Square area 50x50 km:
 0%
 0%
 0%
 0%
 0.02%
 0.03%
 0.06%
 0.06%
 0.07%
 0.06%
 99.7%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
50° 9' 47.2" North, 36° 54' 43.4" East
49° 42' 38" North, 37° 36' 54.6" East
49° 15' 13.5" North, 38° 19' 5.9" East
Some cities around Kupjansk sort by population:
• Izyum
		61.8 km =38.4 mi, 
205°
• Balakliya
		61 km =37.9 mi, 
243°
• Kivsharivka
		10.3 km =6.4 mi, 
149°
• Svatove
		51 km =31.7 mi, 
130°
• Shevchenkove
		31.8 km =19.8 mi, 
267°
• Urazovo, RU
		51.4 km =31.9 mi, 
36°
• Borova
		37 km =23 mi, 
179°
• Savyntsi
		52.5 km =32.6 mi, 
229°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016