The episode established the series' signature real-time format , where each episode represents one hour of the day.
Originally set for October 2001, the premiere was pushed back a week due to the September 11 terrorist attacks. 24 - Season 1 Episode 1
Jack is called into CTU at midnight and informed of an imminent threat against Senator David Palmer , the first African American with a serious chance at the presidency. 24 - Season 1 Episode 1