So that the president of the USA can recite the oath of office.
In Washington D.C
2009
Inauguration of Herbert Hoover happened on 1929-03-04.
Inauguration of James Buchanan happened on 1857-03-04.
Inauguration of Zachary Taylor happened on 1849-03-05.
Inauguration of Chester A. Arthur happened on 1881-09-20.
Inauguration of James A. Garfield happened on 1881-03-04.
Inauguration of Dilma Rousseff happened on 2011-01-01.
Inauguration of John Tyler happened on 1841-04-06.
Inauguration of Benjamin Harrison happened on 1889-03-04.
Inauguration of Franklin Pierce happened on 1853-03-04.
Inauguration of John Adams happened on 1797-03-04.