ABSTRACT This paper proposes the novel concept of ‘temporal activist repertoires’ (TAR) defined as the intentional and meaningful selection and use of temporal elements, such as time frame, timing, tempo, duration, and temporality in collective action’s tactics and frames. Collectives thereby draw on culturally resonant temporal references to interweave the symbolic and strategic choices in making their demands, organising political action and/or sustaining commitment to the political cause. To answer the question of how social movements use TAR and how these are positioned alongside other repertoires of contention, the paper analyses: the global Fridays for the Future and 16 Days of Activism Against Gender-Based Violence, and the Austrian ‘It’s Thursday Again!’. The paper shows that the innovative potential of TAR is linked to the use of technologically advanced media tools for the purposes of coordination, pressure, recruitment, mobilisation and visibility, as well as for the adaptations that these movements require, which include strategies to build on past traditions and/or to connect with currently existing allied movements.