Night Light of Thiruthani (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 38.3701% and for 50x50km: 13.1537%.
Square area 10x10 km:
 2.16%
 4.76%
 5.84%
 3.03%
 5.63%
 10.61%
 8.66%
 9.96%
 11.69%
 34.85%
 2.81%Square area 50x50 km:
 0.1%
 0.72%
 1.28%
 1.05%
 1.52%
 2.39%
 3.94%
 3.82%
 5.42%
 13.49%
 66.28%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 51' 34.5" North, 78° 54' 47.7" East
13° 10' 33.4" North, 79° 36' 58.9" East
12° 29' 25.4" North, 80° 19' 10.2" East
Some cities around Thiruthani sort by population:
• Arakkonam
		11.7 km =7.3 mi, 
150°
• Tiruvallur
		31.9 km =19.8 mi, 
96°
• Puttūr
		30.4 km =18.9 mi, 
346°
• Walajapet
		38.9 km =24.2 mi, 
224°
• Sholinghur
		22.2 km =13.8 mi, 
253°
• Nagari
		16.5 km =10.3 mi, 
348°
• Nārāyanavanam
		27.9 km =17.3 mi, 
353°
• Pallipattu
		25.9 km =16.1 mi, 
314°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016