We all know what it is like to have these sorts of experiences. Reflection on the qualitative character of such experiences suggests that events occurring now have a characteristic property of nowness, responsible for a certain special “feel,” and that events pass from the future, to the present, and then into the past. The question I want to explore is whether we should take this suggestion to support an antireductionist ontology of time, that is, whether we should take it to support an ontology that includes a primitive, monadic property of nowness responsible for the special feel of events in the present, and a relation of passage that events instantiate in virtue of literally passing from the future, to the present, and then into the past. It will be important in what follows to avoid prejudging whether the world actually does include nowness and passage, so I’ll use the locution “as of” instead of just “of” when I want to signal that descriptions like “experience as of passage” merely describe experiences with a certain qualitative character. It should be obvious that we need to take temporal experience seriously: experiences as of nowness and as of the passage of events are central to our subjective perspective. In some deep but hard to define way, our temporal experience is caught up with our sense of being, i.e., our sense of what we are and how we are. (Heidegger engages this idea in his Being...