Night Light of Ālappākkam (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 12.6255% and for 50x50km: 17.6524%.
Square area 10x10 km:
 0%
 0%
 0.65%
 1.95%
 1.3%
 0%
 3.46%
 5.84%
 4.76%
 13.42%
 68.61%Square area 50x50 km:
 0.49%
 2.19%
 3.14%
 2.87%
 1.63%
 2.85%
 3.78%
 4.12%
 6.95%
 12.62%
 59.36%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
12° 17' 12.7" North, 79° 0' 56.9" East
11° 35' 56.2" North, 79° 43' 8.1" East
10° 54' 33.7" North, 80° 25' 19.4" East
Some cities around Ālappākkam sort by population:
• Cuddalore
		18.2 km =11.3 mi, 
16°
• Chidambaram
		22.4 km =13.9 mi, 
187°
• Panruti
		26.8 km =16.7 mi, 
317°
• Nellikkuppam
		20.3 km =12.6 mi, 
344°
• Kurinjippādi
		15 km =9.3 mi, 
248°
• Kīl Bhuvanagiri
		19.1 km =11.9 mi, 
204°
• Valavanur
		38.8 km =24.1 mi, 
337°
• Annāmalainagar
		22.2 km =13.8 mi, 
175°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016