Night Light of Velankanni (Tamil Nadu) from space (India) Src. Average luminocity for 10x10km area is 8.7645% and for 50x50km: 7.6805%.
Square area 10x10 km:
 0%
 0% 0.83%
 0.83% 1.65%
 1.65% 0.83%
 0.83% 0%
 0% 0.83%
 0.83% 1.45%
 1.45% 3.1%
 3.1% 3.72%
 3.72% 6.2%
 6.2% 81.4%
 81.4%Square area 50x50 km:
 0.08%
 0.08% 1.36%
 1.36% 1.27%
 1.27% 1.14%
 1.14% 0.63%
 0.63% 1.17%
 1.17% 1.88%
 1.88% 1.32%
 1.32% 3.07%
 3.07% 5.28%
 5.28% 82.79%
 82.79%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
11° 22' 24.5" North, 79° 7' 48.8" East
10° 40' 60" North, 79° 49' 60" East
9° 59' 29.8" North, 80° 32' 11.3" East
Some cities around Velankanni sort by population:
• Negapatam
		9 km =5.6 mi,  6°
6°
• Kāraikāl
		25.9 km =16.1 mi,  0°
0°
• Thiruvarur
		23.7 km =14.7 mi,  294°
294°
• Vedaraniyam
		34.7 km =21.6 mi,  176°
176°
• Koothanallur
		34.9 km =21.7 mi,  276°
276°
• Tharangambadi
		38.4 km =23.9 mi,  3°
3°
• Nannilam
		32.7 km =20.3 mi,  311°
311°
• Kilvelur
		13.7 km =8.5 mi,  313°
313°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016