No, you can have the season pass start recording earlier or on time, and end on time or later, but never to shorten the recording, ie: just record the first 10 minutes or the last 20 minutes. Unless you set a manual recording, but that only works for a specific time, ie: 11:25pm to 11:40pm every day/m-f/s-s and it will record whatever it is on at that time.
TiVo HD 1TB (157 HD Hrs, PLS, "S3HD")
Roamio, Oh Roamio!
The TiVo Apocalypse begins on Sat 2013 Feb 16 00:00 GMT!