I remember tracking the flashes these satellites made in the sky. Was quite cool as a teenager to be able to predict a flash of light at a particular time in the night sky.
(you'll probably need to set your location)
1) Go to http://www.heavens-above.com/
2) Press "Change your observing location"
3) Choose the city and press "update" at the bottom
4) Press "Iridium Flares"