Objective-C class to calculate Sunrise, Sunset, and Twilight times based on the user's current location and time zone.

EDSunriseSet is an Objective-C wrapper for the C languages routines created by Paul Schlyter. Calculation is done entirely by the C-code routines. EDSunrisetSet bridges those calculations to common cocoa classes like NSDate and NSTimeZone.

Features

• Calculates Sunrise and Sunset times
• Calculates Civil, Nautical, and Astronomical twilight
  
• Times are calculated based on the provided timezone, latitute, and longitude

Documentation

To get information about the sunrise, sunset, and twilight use the method below.

+(EDSunriseSet *)sunrisesetWithTimezone:(NSTimeZone *)timezone latitude:(double)lat longitude:(double)longt

This method returns an EDSunriseSet object which can be used to access the following NSDateComponents each containing a date, hour, minute, and second:

• The local sunrise time, localSunrise
  
• The local sunset time, localSunset
  
• The time when civil twilight (when the sun is 6 degrees below the horizon) begins and ends, localCivilTwilightStart and localCivilTwilightEnd
  
• The time when nautical twilight (when the sun is 12 degrees below the horizon) begins and ends, localNauticalCivilTwilightStart and localNauticalCivilTwilightEnd
  
• The time when astronomical twilight (when the sun is 18 degrees below the horizon) begins and ends, localAstronomicalTwilightStart and localAstronomicalTwilightEnd

You may also access NSDate proprties on EDSunriseSet which give a read-only value of the date for the specified property. These properties include sunrise and sunset among others.

License

EDSunriseSet license is MIT based. Attribution is appreciated, but not required.