He takes the oath of office on 20 January, following the election in November.
A speech by the president on his or her first day of office
The first inauguration did not take place until April 30, 1789.
January 20 is the date the president is sworn in.
March 4th, 1861
Inauguration Day, which is on January 20th.
March 20 of his first year in office
The next president will take office on Inauguration Day, January 20, 2009.
At noon on the 20th in January. The 20th Amendment states: "The terms of the President and Vice-President shall end at noon on the 20th day of January." The new President and VP take office immediately upon conclusion of the preceding terms.
The next president of the U.S. will be elected in November 2008 and take office on Inauguration Day in January 2009.
I think the president becomes official at NOON the day of inauguration, whether he takes the oath or not.
I believe the day of inauguration which I think is January 20, 2009.
January 20 of the year following the election in November is presidential inauguration day.