If you pop that tape into a Canon deck/camera the time/date is embedded in there (provided the day/time where set correctly in the camera settings the day it was shot).
I'm not sure if you can see that information in a Log & Capture window in FCP, but it might be worth a look. But for sure it'll be there when played back through a Canon tape deck or camera.
Ryan Holmes
http://www.ryanholmes.me
vimeo.com/ryanholmes