Abstract
Debate about the nature of time has been dominated by discussion of two issues: the reality of absolute time and the reality of A-series. We argue that Aristotle adopts a form of the A-theory entailing a denial of the reality of absolute time. Furthermore, Aristotle's denial of absolute time is linked to a denial of the reality of pure temporal becoming, namely, the idea that the now moves through a fixed continuum along which events are arranged in chronological order. We show that the puzzles discussed by Aristotle in IV:10 of the Physics are generated by this view of time and that Aristotle's own theory of time, according to which changes are used to measure one another, avoids these problems.