The inauguration occurs at about 12:00 p.m., on January 20. President Obama was sworn in at 12:05 p.m. EST on January 20,02009. read more
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. read more