This article examines how speakers of Kam Muang in Northern Thailand draw on distinct temporalities (the slow paced, long-term historical temporality of "longue duree"; the medium paced, autobiographical temporality of intermediate time frames; and the fast-paced, immediate temporality of the "courte duree") to conceptualize their community's shifting language practices and language policies. The analysis demonstrates how the traces of these temporalities in speakers' language ideologies, language practices, and language socialization practices reflect their lived experiences in distinct, class-based trajectories of socialization. (Contains 2 footnotes.)