Sun Calculations

Day: Month: Year: Longitude (- to W): º ' " Latitude: º ' "

Sunrise: (GMT) h m. Sunrise Azimuth: º '
Sunset: (GMT) h m Sunset Azimuth: º '
Transit: (GMT) h m. Altitude Transit º '



Solar Position at 0h of GMT: Solar Longitude: Right Ascension: = h m s Declination: = º ' "

  • To write a negative geographical longitude (W of Greenwich), for example -3º 12' 47" there must be negatives placed in the boxes of all the variables: -3º -12'-47".
    The same for latitude. 

  • This calculator does not work for places with permanent day or night.

  • The origin of azimuth is the cardinal point South.

Code by Matt Oltersdorf