If you want to look for NanoSail-D, head over to Heavens Above where they have a dedicated link (next to the dedicated ISS link). Set up your local position and click on the link to find when you can see it. For CalSky, you have to click on the Satellites menu item, then click on Sat-Library, then search for NanoSail-D2. There are also predictions from Spaceweather.com
As well, don't forget the cometeition. NASA and Spaceweather.com are staging a photo contest.
Cash prizes ranging from $100 to $500 are being offered for best images of NanoSail-D submitted between now and the time the sail disintegrates. High-resolution telescopic images of the spacecraft, wide-angle shots of NanoSail-D soaring overhead, and lucky-shots of flares are all eligible.Visit nanosail.org for details of the competition.