In accordance with the requirements of the United States Constitution, President Barack Hussein Obama was officially sworn-in and began his second term on Sunday, January 20, 2013.
Under the Constitution, a president's term ends at noon Jan. 20. So the official swearing -in occurred on Sunday. Following historical precedent, the inaugural ceremony did not take place on Sunday.
The official swearing-in was a nearly private affair in the White House's oval shaped blue room. You can watch video of the official swearing in below:
This time, unlike Obama's first swearing-in, Chief Justice John Roberts administered the 35-word oath correctly. The Constitution, in Article Two, Section One, Clause Eight, requires that the President take the oath of office:
"Before he enter on the Execution of his Office, he shall take the following Oath or Affirmation: -- I do solemnly swear that I will faithfully execute the office of president of the United States and will to the best of my ability, preserve, protect and defend the Constitution of the United States."
After the oath was taken, President Obama was heard to say, "I did it." His daughter Sasha replied, "Good job, Dad, you didn't mess up."
For those of us who remain in the loyal opposition, the good news is that only 1,460 days remain in the Obama presidency.