>On Sun, 5 Oct 1997, Alberto Smulders wrote:
>
>> Does anybody know where to find an algorithm to calculate sunrise and
>> sunset data for a given geographical location ?  We need it for our
>> greenhouse automation software.
>
>  Twenty years ago an excellent algorithm was published in Byte magazine.
>Check at the library in an issue around 1977 or 1978.
>
>  I wish Byte was a tenth as good now as it was then...