Kant and the Conventionality of Simultaneity

In his Third Analogy of Experience, Kant argues that a universal system of mutual causal interaction-at-a-distance is presupposed in the very construction of experience, and thereby also can be assumed to hold of objects of experience qua appearances. This implies in turn a notion of objective simultaneity. I discuss whether Kant's project is rendered wholly obsolete by the relativity and conventionality of simultaneity as it is now understood under the theory of relativity. I conclude that, while major parts of his project are indeed obsolete, there may still be useful insights into time-awareness to be gleaned from his work.