In Mark Twain's humorous novel A Connecticut Yankee in King Arthur's Court the hero, a 19th century American, finds himself transported to the year 528, the time of King Arthur. There, like Columbus, he finds himself in a tight spot from which his knowledge of an upcoming solar eclipse, on June 21 of that year, saves him. He "predicts" the eclipse and this convinces those around him that he has magical powers. As Wikipedia explains:
By a stroke of luck, the date of the burning coincides with a historical solar eclipse in the year 528, of which Hank [the hero] had learned in his earlier life.However, that same Wikipedia entry adds:
(In reality, the solar eclipses nearest in time to 21 June, both partial, both in the Southern Hemisphere at maximum, in 528 occurred on 6 March and 1 August.)I don't know whether Twain had actually consulted an almanac in order to lend some historic accuracy to what was anyway a humorous novel (and was misinformed), nor whether anyone reading the novel when it was published really cared. Considering it's a work of fiction (and time travel still hasn't been perfected) I suppose it doesn't really matter.