Day Length Prog. Needed

[Edward W Burkett]

I am conducting research in which I need to know the length of day for
every day in 1984-1986.  I recently saw a program posted which gave the time
of sunrise and sunset for the current day but with my limited programming
skills could not modify it to give the dates I required. 

I need this information specifically for longitude 88.01.00 latitude 40.23.00
and would like to be able to select the dates of interest.

I am working on a Unisys 7000/40 using the Unix 4.3bsd+ operating system.

We have Berkley Pascal and C for this operating system.

If anyone knows of a program that does this or can modify an existing program
I would greatly appreciate the help.

Please respond with email if possible.

Edward W Burkett      burkett at csd4.milw.wisc.edu