The inauguration of the president of the United States is a ceremony to mark the commencement of a new four-year term for Americas leader.
The inauguration takes place for each new presidential term, even if the president is continuing in office for a second term. Since 1937, it has taken place at noon EST on January 20, the first day of the new term, some 72 to 78 days after the presidential election, except for three occasions when January 20 fell on a Sunday.
In those years, the presidential oath of office was administered on that day privately and then again in a public ceremony the next day, on Monday, January 21. The presidential inauguration is scheduled to take place on January 20, 2021, when Joe Biden will assume office.
Recitation of the presidential oath of office is the only component in this ceremony mandated by the United States Constitution (in Article II, Section One, Clause 8).
Though it is not a constitutional requirement, the chief justice typically administers the presidential oath of office. Since 1789, the oath has been administered at 58 scheduled public inaugurations, by 15 chief justices, one associate justice, and one New York state judge.
Others, in addition to the chief justice, have administered the oath of office to several of the nine vice presidents who have succeeded to the presidency upon their predecessor’s death or resignation intra-term.