Compute daylenght (photoperiod) at a latitude for a day of the year.
latitude, in degrees. I.e. between -90.0 and 90.0
Day of the year. Integer between 1 and 365
William C. Forsythe, Edward J. Rykiel Jr., Randal S. Stahl, Hsin-i Wu, Robert M. Schoolfield, 1995. A model comparison for daylength as a function of latitude and day of the year. Ecological Modeling 80: 87-95.
1 2 3 4 5 6 7
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.