President of Argentina
Under the 1994 constitutional amendment, the President serves for four years, with a possibility of immediate reelection for one more term. However, unlike the President of the United States, in Argentina, a person may be reelected again after serving for two terms and staying out of office for the following term. So after serving for two consecutive periods, the president is not allowed to run for a third consecutive one, but may return for the two following elections and so on. There is no limit for a person to be a candidate if he or she does not win the elections.
American Association for the Advancement of Science
Individuals elected to the presidency of the AAAS hold a three-year term in a unique way. The first year is spent as President-elect, the second as President and the third as Chairperson of the Board of Directors. In accordance with the convention followed by the AAAS, presidents are referenced by the year in which they left office.