Today is Inauguration Day and it's one like no other before it so we'll take a moment to watch the event and view it in historical context as it occurs at midday. Since 1937, it has taken place at noon EST on January 20, the first day of the new term. Since the 1981 inauguration of Ronald Reagan, the ceremony has been held at the west front of the United States Capitol facing the National Mall with its iconic Washington Monument and distant Lincoln Memorial. From 1829 through 1977 most swearing-in ceremonies had taken place on a platform over the steps at the Capitol's east portico. They have also been held inside the Old Senate Chamber, the chamber of the House of Representatives, and the Capitol rotunda. The most recent regularly scheduled inauguration not to take place at the Capitol was the fourth inauguration of Franklin D. Roosevelt in 1945, which was held at the White House.
The first inauguration, that of George Washington, took place on April 30, 1789. All subsequent inaugurations from 1793 until 1933, were held on March 4, the day of the year on which the federal government began operations under the U.S. Constitution in 1789. The exception to this pattern was those years in which March 4 fell on a Sunday. When it did, the public inauguration ceremony would take place on Monday, March 5. This happened on four occasions, in 1821, 1849, 1877, and 1917. Inauguration Day moved to January 20, beginning in 1937, following ratification of the Twentieth Amendment to the Constitution, where it has remained since. A similar Sunday exception and move to Monday is made around this date as well (which happened in 1957, 1985, and 2013).
Today Joe Biden's inauguration will occur without a large crowd due to the pandemic and heightened security after the recent Capitol events so they will instead be met with a sea of American flags on the National Mall.