Time, as we experience it, is a social and cultural phenomenon. The pioneering study of the social representation of time was by Henri Hubert (1872-1927). Hubert was a core member of the group who worked with Emile Durkheim and a close collaborator with Marcel Mauss. His essay on time is a good example of the group's originality and intellectually creative collective ferment. This is its first English translation, and includes its review by Mauss.