Longest presidencyShortest presidency The length of a full four-year term of office for a president of the United States usually amounts to 1,461 days (three common years of 365 days plus one leap year of 366 days). The listed number of days is calculated as the difference between dates, which counts the number of calendar days except the first day (day zero). If the first day were included, all numbers would be one day more, except Grover Cleveland would have two more days, as he served two full nonconsecutive terms.
Of the individuals elected president, four died of natural causes while in office (William Henry Harrison, Zachary Taylor, Warren G. Harding, and Franklin D. Roosevelt), four were assassinated (Abraham Lincoln,Martin, Paul "Lincoln's Missing Bodyguard" , Smithsonian Magazine, April 8, 2010, Retrieved November 15, 2010 James A. Garfield,Donald (1996), p. 597. William McKinley, and John F. Kennedy), and one resigned from office (Richard Nixon).
William Henry Harrison spent the shortest time in office, while Franklin D. Roosevelt spent the longest. Roosevelt is the only American president to have served more than two terms. Following ratification of the Twenty-second Amendment in 1951, presidents—beginning with Dwight D. Eisenhower—have been ineligible for election to a third term or, after serving more than two years of a term to which some other person was elected president, to a second term. The amendment contained a grandfather clause that explicitly exempted the incumbent president, then Harry S. Truman, from the new term limitation.
While there have been 47 presidencies in the nation's history, only 45 people have been sworn into office; Grover Cleveland and Donald Trump were elected to two nonconsecutive terms.
Presidents by time in office Rank President Lengthin days Order of presidency Number of terms 1 Three full terms; died into fourth term2tie Two full terms Two full terms Two full terms Two full terms Two full terms 2,922 Two full terms (nonconsecutive) Two full terms Two full terms Two full terms Two full terms Two full terms Two full terms 14 Two full terms 15 Succeeded to one partial term (), followed by one full term 16 Succeeded to one partial term (), followed by one full term 17 One full term, currently serving second (nonconsecutive) term 18 Succeeded to one partial term (), followed by one full term 19 One full term; resigned into second term 20 Succeeded to one partial term (), followed by one full term 21 One full term; assassinated: died into second term, days after being shot 22 One full term; assassinated: died into second term, day after being shot23tie One full term One full term One full term One full term One full term One full term One full term One full term One full term One full term One full term One full term 35 One full term 36 Succeeded to one partial term () 37 Succeeded to one partial term () 38 Succeeded to one partial term () 39 Assassinated: died into term 40 Succeeded to one partial term () 41 Succeeded to one partial term () 42 One partial term; died into term 43 One partial term; died into term 44 Assassinated: died into term; days after being shot 45 One partial term; died into term
Notes
See also List of vice presidents of the United States by time in office Lists of presidents by time in office
References
External links
Millercenter.org, American President: A Reference Resource Whitehouse.gov, The Presidents