I begin by discussing what a theory of time is and what it should aim to do. Then discusses the initial plausible candidates for a theory of time; shows how best to frame the debate between tensed and tenseless theories of time; and discusses the tenseless theory, and the various tense theories, such as the growing block view of Tooley, the branching-future view of McCall, and presentism.
Keywords: tense, tenseless, Tooley, McCall, presentism