Night Light of Kalachinsk (Omsk) from space (Russia) Src. Average luminocity for 10x10km area is 6.8183% and for 50x50km: 0.2812%.
Square area 10x10 km:
 0.13%
 0.38%
 1.38%
 0.63%
 0.63%
 2.88%
 2.13%
 0.88%
 0.13%
 1.38%
 89.47%Square area 50x50 km:
 0%
 0.01%
 0.05%
 0.02%
 0.02%
 0.11%
 0.08%
 0.03%
 0.01%
 0.07%
 99.56%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
55° 27' 13" North, 73° 52' 19.2" East
55° 3' 10.3" North, 74° 34' 30.4" East
54° 38' 53.1" North, 75° 16' 41.7" East
Some cities around Kalachinsk sort by population:
• Omsk
		77.2 km =48 mi, 
265°
• Tatarsk
		91.4 km =56.8 mi, 
78°
• Tavricheskoye
		79.4 km =49.3 mi, 
229°
• Kormilovka
		30.6 km =19 mi, 
259°
• Beregovoy
		87.2 km =54.2 mi, 
278°
• Vkhodnoy
		90.2 km =56 mi, 
262°
• Okoneshnikovo
		40.3 km =25 mi, 
126°
• Nizhnyaya Omka
		48.3 km =30 mi, 
28°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016