The 20th
Amendment to the Constitution, which changed the beginning of a Presidential
term from March 4 to January 20, was ratified in 1933, and took effect for
President Franklin D. Roosevelt’s second term in 1937.
Inauguration Day, normally on January 20, falls
on a Sunday this year. Only
six times in the nation's history has the constitutionally-mandated date for a
Presidential Inauguration fallen on a Sunday. January 20, 2013 will be the
seventh time, and following historical precedent, the public ceremony will be
held at the U.S. Capitol on Monday, January 21, 2013. In a tradition that dates
back to 1917, the White House will likely arrange a private swearing in before
noon on January 20, 2013.
Source: http://www.inaugural.senate.gov/about/jan-21
