Sun path calculator

Latitude2 ° North South    Solar time : hrs
Longitude2 ° East West Sun rise5 : hrs
Time zone Sun set5 : hrs
Date / Sun altitude ° above the horizon
Local time : hrs Summer time Sun azimuth ° East of South

azimuth Notes:

  1. No responsibility is taken for the accuracy of these calculations.
  2. The longitude and latitude of a large number of world cities can be found on Infoplease.com.
  3. All formulae are taken from the RADIANCE visualisation package with kind permission from Lawrence Berkeley National Laboratory.
  4. There is a very nice web-based shareware program called Sun Angle Calculator which does everything this calculator does and a lot more.
  5. Times of sun rise and sun set do not take account of atmospheric refraction and relative elevation. Times shown are simply when the sun's altitude is 0°. In reality, the sun is only hidden when it is about 0.84° below the geometric horizon. This is due to the atmospheric refraction and the apparent radius of the sun which is 0.27°.

Animation of sun patches in a room Next