My apologies to Mike DK3WN...I had totally forgotten his fine software which answers my question completely. http://www.dk3wn.info/files/illum.zip
Thank you Mike!
From: Graham Shirville Sent: Tuesday, September 08, 2015 3:55 PM To: AMSAT BB Subject: Sunlight periods for cubesats deployed from the Space Station
Has anyone got any details of how the sunlit/eclipse periods vary for cubesats that are deployed from the ISS up to the time that they deorbit?
All information would be gratefully received!