Night Light of Tobruk (Al Buţnān) from space (Libya) Src. Average luminocity for 10x10km area is 70.3881% and for 50x50km: 7.5194%.
Square area 10x10 km:
 24.3%
 26.75%
 7.52%
 3.32%
 2.8%
 3.15%
 2.62%
 3.32%
 15.38%
 10.31%
 0.52%Square area 50x50 km:
 1.35%
 1.89%
 0.88%
 0.51%
 0.61%
 0.83%
 0.77%
 1.16%
 2.13%
 4.23%
 85.64%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
32° 41' 0.2" North, 23° 15' 2.6" East
32° 5' 22.7" North, 23° 57' 13.9" East
31° 29' 31.2" North, 24° 39' 25.1" East
Some cities around Tobruk sort by population:
• Al Marj
		297.1 km =184.6 mi, 
278°
• Darnah
		144.8 km =90 mi, 
301°
• Al Bayḑā’
		219.5 km =136.4 mi, 
289°
• Mersa Matruh, EG
		321.1 km =199.5 mi, 
104°
• Al Abyār
		316.3 km =196.5 mi, 
272°
• Al Qubbah
		177 km =110 mi, 
294°
• Tūkrah
		320.9 km =199.4 mi, 
278°
• Al Bardīyah
		113.2 km =70.3 mi, 
109°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016