What is the meaning of the song 25 or 6 to 4?

Robert Lamm of Chicago said "25 or 6 to 4" is simply the time of day, meaning 25 or 26 mins to 4 AM (3:35 or 3:34 AM). It's about writing a song late at night.
Updated on Thursday, February 02 2012 at 08:21AM EST
Collection: chicago