Sunset/sunrise calculations and libs

sunset-sunrise.md

Python

https://github.com/dshiga/sunrise

Ruby

https://github.com/eripa/sunrset

ObjC

https://github.com/FriskyElectrocat/FESSolarCalculator
https://github.com/erndev/EDSunriseSet
https://github.com/BigZaphod/CLLocation-SunriseSunset

General links

http://www.wunderground.com/weather/api/d/docs
http://suncalc.net

http://stackoverflow.com/questions/2056555/c-sharp-sunrise-sunset-with-latitude-longitude
http://www.esrl.noaa.gov/gmd/grad/solcalc/
http://williams.best.vwh.net/sunrise_sunset_algorithm.htm