This philosophical text examines the ontological nature of an event as an internally interconnected whole that must actively engage with its temporal dimensions to maintain its identity. The author argues that for an event to exist as a unified entity, it must continuously integrate both future and past elements within its progression. To describe this process, the term "proception" is introduced, derived from the Latin root pro-capio, representing the active "pre-grasping" of future, yet-to-be-realized elements necessary for the integrity of the whole. Simultaneously, the event requires the function of "reception," an active backward-reaching grasp of what has already transpired. This reception is not merely a passive trace or an involuntary memory, but rather an active "memory of being" that sustains past components in a vital relationship with the totality of the event. Thus, the being of an event is viewed as a dynamic performance where proception and reception converge at every moment to ensure continuity and internal unity. The text offers a profound insight into the temporal structure of events, emphasizing their active and synthesizing character.