All actions and the financial consequences of all actions are uniquely dated. The dates of actions and consequences are essential elements of their description and essential inputs to their understanding. However, in the course of time, the temporal uniqueness of financial events has come to be disregarded in periodical aggregative accounting. To this dereliction is attributable much of the confusion in argument and infelicity in practice that has stultified the striving for a perennially serviceable style of accounting.