According to
http://inaugurationday2009.com/schedule.html, this is the timeline for Inauguration Day 2009
All times Eastern
8:00 AM -- Gates open for ticketed attendees (although, I've heard the Mall will open at 4:00 am)
10:00 AM -- Prelim festivities begin with music by the United States Marine Band, The San Francisco Boys Chorus and the San Francisco Girls Chorus
11:00 AM -- Live Internet Broadcast of the Inauguration will begin on the Presidential Inaugural Committee's Website.
11:25 AM (according to CNN, 11:30 according to this site) --
-- Call to Order and Welcoming Remarks by Sen. Dianne Feinstein (D-California)
-- Invocation by Pastor Rick Warren
-- Special Music by Aretha Franklin
-- Vice President-elect Joseph R. Biden will be sworn into office
-- Music composed by John Williams and performed by Itzhak Perlman, Yo-Yo Ma, Gabriela Montero, and Anthony McGill
11:56 AM -- President-Elect Barack H. Obama places his left hand on the Lincoln Bible and raises his right hand and faces Chief Justice John Roberts and takes the Oath of Office.
12:00 PM -- President Obama officially becomes the 44th President of the United States and President George W. Bush officially becomes Former President Bush.
12:05 PM (approx) -- President Obama will deliver his inaugural address. The speech should last about 18-20 minutes.
1:00 PM -- Inaugural Luncheon
2:30 PM -- Parade begins down Pennsylvania Ave.
Evening -- Inaugural Balls