This article presents the introduction and the update of an ethnographic research on temporality among indigenous groups, published in 2011 in its full version as a book in Spanish. It seeks to prove the usefulness of the conceptual distinction between time, defined as the phenomenon of becoming in itself, and temporality, defined as the human apprehension of becoming in a cultural context. Furthermore, the existence of non-hegemonic temporalities is exemplified by a case study of originary temporality with Mocoví indigenous societies in Argentina’s Chaco region. The methodology built for studying temporality in different social groups, termed here as cultural rhythmics, is also introduced. By studying different rhythmic experiences integrated in the participant observation, the rhythmic method enables us to interpret social facts that are implicit in the everyday practices of organisation, in the economic–political relations, and in the group’s worldviews.