This dissertation analyzes temporal meaning in German. The framework is that of a model-theoretic semantics. more specifically one incorporating a multi-dimensional tense logic. Chapter 1 presents this framework and is sufficient for those interested only in the general theory of temporal meaning. It argues that three dimensions are optimal for the description of natural language temporalia. giving rise to a Reichenbachian system for temporal description. Special attention is paid to the definite interpretations of tense noted in Partee (1973). Although it is not the purpose of the investigation. it turns out that the interpretation of Reichenbach's speech. event, and reference times as indices within model theory explains several otherwise unmotivated aspects of Reichenbach's remarks on tense.