The presidential inaugural ceremony is typically held on Jan. 20, a constitutionally mandated date. The 20th amendment to the United States Constitution actually says the swearing in should happen on Jan. 20: “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 3rd 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.” However…
