Synonym a Day

 Wilt [Chamberlain] remains the most nocturnal of men; often, he will not call it a day before the sun comes up. Apart from the hours he sets aside for his exercise, there is no pattern to his existence. He does not even live a diurnal life as we know it. He will, for example, go on a complete fast, eat nothing at all for three days, and then suddenly, at 4:30 in the morning, devour five greasy pork chops. . . . He is as independent as anyone in the world. (Frank Deford, “Doing Just Fine, My Man,” Sports Illustrated, 8/18/1986.)