This text presents a rigorous philosophical analysis of the concept of actuality and its ontological source within the framework of event ontology. The author develops the thesis that every event unfolds by passing through a sequence of its own unique actual presences, which are intrinsically tied to that specific event and are fundamentally non-shareable, even if they remain comparable to others. The central problem addressed by the author is the mechanism through which the distinct actual presences of various proximate events can relate to or align with one another. A crucial distinction is made between original actuality, which is inherent to an individual true event, and the derivative actuality of a specific spatiotemporal field, locality, or region. Just as it is necessary to distinguish between original time and general time, one must differentiate between the primary actuality of a single event and the secondary actuality of a spatiotemporal temporality. This reflection offers a deeper understanding of the structure of becoming and the nature of the present moment, clarifying how individual events constitute the broader fabric of reality.