The present article investigates in the archaeology of the social modern temporality in one doubly facet: imaginaria and identitaria. Likewise, it analyzes the configuration of both with the constitution of the modernity. Linked to the previous thing, it reveals the outlines definitorious of the emancipating program on which it had been sustained in the modern epoch. The decomposition of the model of future, as fundamental prop on which it was resting the modernity, modifies the perception of the temporality and, in consequence, its relation with a time of liberation. In consequence, the postmodernity toughens up to last end the crisis of the symbolic judeo-cristian universe, for what, opposite to the historical modern, smart lineality for social heterogeneous and fragmentary trends.