They assume office at noon on January 20, according to Amendment XX.
All US presidents take the oath of office, starting with the first president, George Washington.
on the twentieth day of January following their election
Yes, the president can take two oaths of office, though it is uncommon. This typically occurs if a president is unable to take the official oath during the inauguration for any reason, requiring a second oath to be administered later. Additionally, some presidents have chosen to reaffirm their commitment to the office through a ceremonial oath-taking at a later date. However, only the first oath taken is constitutionally recognized as the official oath of office.
No, he used the Bible to take his oath of office.
The oath is the last sentence of section 1, Article II.
They take their presidential oaths at Capitol Hill, at their inauguration.
I do not think that any take an oath- possibly they do in some religious colleges.
First he has to be legally elected as President or else become president by succession. Second he must be "sworn in" by taking the oath of office before a person who is legally qualified to administer oaths.
Oath of Office
Yes-congressmen take an oath of office before they begin work.
No, they usually take it in front of the Capitol building. Some have taken it in the White House and one even on an airplane.
American presidents who are re-elected are required to repeat the oath of office.