Night Light of Gudiyatham (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 37.7229% and for 50x50km: 12.9918%.
Square area 10x10 km:
 0%
 4.98%
 6.49%
 3.46%
 3.68%
 6.49%
 11.69%
 14.29%
 22.94%
 22.29%
 3.68%Square area 50x50 km:
 0.09%
 1.46%
 1.52%
 0.9%
 1.33%
 2.55%
 3.58%
 4.51%
 5.49%
 11.93%
 66.64%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
13° 37' 49.1" North, 78° 10' 14.3" East
12° 56' 45.6" North, 78° 52' 25.6" East
12° 15' 35.4" North, 79° 34' 36.8" East
Some cities around Gudiyatham sort by population:
• Vellore
		28.2 km =17.5 mi, 
96°
• Ambur
		24.2 km =15 mi, 
224°
• Peranāmpattu
		16.8 km =10.4 mi, 
265°
• Palmaner
		31.4 km =19.5 mi, 
334°
• Pallikondai
		8.7 km =5.4 mi, 
121°
• Kātpādi
		29.6 km =18.4 mi, 
84°
• Pudūr
		29.8 km =18.5 mi, 
78°
• Odugattūr
		19.8 km =12.3 mi, 
177°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016