Abstract
In this paper I explain the basics of Heidegger’s early Daseinanalytik, an account that contains promising insights for the phenomenology of time. I then draw out some of the relevant lessons from his phenomenology for the debate between A-theorists andB-theorists in contemporary analytic philosophy of time, and I show how it is that he gives a more philosophically satisfying account of the phenomenological features of becoming than one generally finds in the analytic debate. In Heidegger’s theory, becoming is not some contingent and misleading artifact of consciousness or of Dasein. It is a necessary and sufficient condition for their occurrence, even though it is not identical with them.