<P> Section 1 . The terms of the President and Vice President shall end at noon on the 20th day of January , and the terms of Senators and Representatives at noon on the 3d day of January , of the years in which such terms would have ended if this article had not been ratified ; and the terms of their successors shall then begin . </P>
when is the president sworn into office ( date and time of an odd or even year )
at noon on the 20th day of January