He took the oath of office on March 14, 1861 for the first time administered by then Supreme Court Chief Justice Robert B. Taney who was Chief Justice from March 28, 1836 till October 12, 1864.
I think the president becomes official at NOON the day of inauguration, whether he takes the oath or not.
The Chief Justice of the Supreme Court performs this function at planned inauguration ceremonies. If the president dies and the vice-president has to be sworn unexpectedly, the oath may be administered by anyone legally able to administer an oath- such as a judge, or even a Justice of the Peace.
The same one that the senate, president, and justices take.
because not all confederate were willing to vote
ten percent
Lyndon Johnson
Lord Mountbatten
Calvin Coolidge
William Rehnquist swore in seven presidents during his tenure as Chief Justice of the United States Supreme Court: Richard Nixon in 1969, Gerald Ford in 1974, Jimmy Carter in 1977, Ronald Reagan in 1981 and 1985, George H.W. Bush in 1989, and Bill Clinton in 1993.
The Oath of Office will be Administered to President-elect Barack H. Obamaby the Chief Justice of the United States The Honorable John G. Roberts, Jr.
The oath of office has been administered by the Chief Justice in recent years .
The Presidential Oath of Office
Associate Justice John Paul Stevens, who is the Senior Associate on the Court, flawlessly administered the Oath of Office to Vice-President Biden.
Chief Justice Salmon P. Chase administered the Oath of Office to Andrew Johnson on April 15, 1865, the day President Lincoln died.
Chief Justice
The Oath of Office was administered by the Chief Justice of the United States, John G. Roberts.
Abraham Lincoln