The formation of time con epts and the making of time I measurements, i.e. the production of devices as well as their use and social function, become for him a problem of social knowledge and its formation. It is couched in the long-term perspective of evolution of human societies. Knowledge about time is not knowledge about an invariant part or object of nature. Time is not a quality inherent in things, nor invariant across human societies.
Combine this with the notes on Norbert Elias above.