Today in History: Constitution of the United States signedPoliticsSep 16 at 11:30 PM – Sep 17 at 4:10 AM3 outletsUnited StatesChicago TribuneToday in History: Constitution of the United States signed Sep 16 at 11:30 PMThe Philadelphia InquirerToday in History: September 17, U.S. Constitution signed Sep 17 at 4:10 AMUPIOn This Day, Sept. 17: Founding Fathers sign Constitution Sep 17 at 3:00 AM