[brianogilvie]

I don't think of OmniFocus actions or projects as being "located" in time. They can have a start date, and they can have a due date, but those are indications of when you can start to act on them and when you must finish them (or renegotiate the deadline).

I could see locating an action, or a project, in time in the sense of a critical path: that is, taking the due date and the estimated time for each action and then counting backwards to find the last feasible start date. There, though, you're getting into territory that might better be handled by OmniPlan, Merlin, or some other project manager with more robust features than OmniFocus.

Maybe for 2.0....