via press release:
PRESIDENT BARACK OBAMA TO VISIT CBS's "LATE SHOW with DAVID LETTERMAN," MONDAY, SEPT. 21
Marks First Appearance By A Sitting U.S. President On The LATE SHOW
President Barack Obama will visit the LATE SHOW with DAVID LETTERMAN, Monday, Sept. 21 (11:35 PM-12:37 AM, ET/PT) on the CBS Television Network. He will be the sole guest on the broadcast.
President Obama's appearance will mark the first by a sitting U.S. President on the LATE SHOW and his first visit back to the show since his election. In total, this will be President Obama's sixth visit to the broadcast - he last appeared on the LATE SHOW Sept. 10, 2008 during the height of his 2008 Presidential election campaign.