President John F. Kennedy delivered his Inaugural Address on January 20, 1961... not on January 21, 1961 (despite the incorrect date given above).

Since 1937, formal U.S. presidential inaugural ceremonies at the Capitol Building have been held every four years on January 20th, except in cases when January 20th has fallen on a Sunday (in those cases only, the formal ceremonies have been held the following day, Monday, January 21st, as in the cases of the second Eisenhower inaugural in 1957 and the second Reagan inaugural in 1985). Since Kennedy's inauguration day fell on a Friday, the formal ceremonies did not have to be moved to the following day and were thus held on Friday, January 20, 1961.

Prior to 1937, formal inaugural ceremonies were held every four years on March 4th, with the exception of Washington's first inaugural, which was held on April 30, 1789 (the same Sunday rule applied to the Monroe second inaugural in 1821, the Polk inaugural in 1849, the Hayes inaugural in 1877 and the second Wilson inaugural in 1917).

The next presidential inauguration day to fall on a Sunday will be in 2013.

JFK's most famous speech, not his best. Not too sure why he's yelling most of the time here. But the recording is of course famouss for the 'Ask What You Can Do For Your Country" line. Other than that, I wasn't too impressed with what JFK said here surprisingly. The threat of communism is briefly mentioned, but not much. Meh.