This text explores the concept of the "primordial event" and its relationship with time. Every event possesses its own internal time (active timing) while simultaneously occurring within a temporal environment created by other events. A primordial event is defined as the smallest unit of integrated happening that requires nothing external for its progression. The author distinguishes between the internal timing of the event itself and the temporal field formed by the reactivity of surrounding events. While one can theoretically conceive of primordial events lacking reactivity, which would possess internal time but remain unsituated, true temporal situatedness implies active participation in a shared environment. Consequently, the temporal field is not a passive external condition but is actively generated and sustained by primordial events through their reactions. Common time is thus established through the derived timing of actions and reactions rather than solely by the internal timing of isolated events. This analysis highlights the dynamic and interactive nature of temporality within an ontological framework.