19 Inauguration Days have been on January 20 from 1937 through 2009. A total of 12 different presidents have been inaugurated on January 20.
1
Yes. There are many documented instances of Presidents' swearing while in office.
Eight
None. The youngest President was Theodore Roosevelt who took office when he was 42 years of age.
One; Ford.
2001
43
39 of the 44 U.S. Presidents to date have won at least one presidential election.35 of the 44 Presidents started their (first) presidencies by election; the other nine became president when their predecessors died or resigned.
39 presidents are dead 39 presidents are dead
43 and on January 20 2009 44
all of them
8 us presidents