Andrew Johnson took the Oath of Office on April 15, 1865, the day Abraham Lincoln died. He didn't have a big inaugural ball, parade, etc. that elected presidents get.
January.
Only Lincoln - inaugurated a month before the war started, and re-inaugurated a month before it (effectively) ended. If you include the small actions in North Carolina, then you have to count Andrew Johnson as a wartime president.
January
The US President and Vice-President are both inaugurated on 20 January every 4 years.
The US president is inaugurated in January. That is, whoever is elected in November 2008 will be inaugurated January 2009.
The US President is inaugurated on 20 January every 4 years.
march
William Henry Harrison was inaugurated on March 4th of that year, and his Vice President, John Tyler, became President when Harrison died a month later.
March.
No
The US Constitution amended the date of Presidential Inauguration from March to January, effective with FDR's second term. Prior to this, it took place in March. The first US President, George Washington, was inaugurated 3o April.
The 9th president, William Henry Harrison, was inaugurated on March 4, 1841 and died on April 4, 1841 of pneumonia,