John Titor and TimeTravel_0 are pseudonyms used in communications and on internet forums between 1998 and 2001 by an individual claiming to be an American military time traveler from the year 2036. His posts discussed various aspects of time travel, and described future calamitous events, including a global nuclear war. The uniform inaccuracy of their predictions and inconsistencies in their explanations has led many to view the story with skepticism. A 2009 investigation suggested that the entire affair was a hoax created by Larry Haber, a Florida entertainment lawyer, and his brother John Rick Haber, a computer scientist. These claims have never been verified.
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