My dissertation, entitled “Punctuality: morality, authority, and time measurement in Victorian Britain,” examines how, during the nineteenth-century, diverse cultures of time were underwritten by discourses about the value of time and its proper use, very often articulated as punctuality. Railways, telegraphs, and time-keeping devices created a landscape within which punctuality could at once evoke safety, class, piety, and morality. Being a passenger entailed waiting for trains and reading timetables, pocket watches, and station clocks. Yet while railways, telegraphs, and electric clocks could generate new temporal regimes, deeply rooted values about time and its use underwrote efforts to discipline those systems and the people using them. I first trace the way punctuality was generated as a metric of piety and sensibility through Evangelical sermons and magazines in the late eighteenth century. By the end of the nineteenth century the value was largely secularized, but breeching this moral code was no less grave. Throughout the nineteenth century, punctuality sustained efforts to construct electrically regulated clocks, discipline workers, and prevent railway accidents. Understanding how this value was constructed and debated reveals the extent to which technology might disrupt traditional codes of trust and propriety, and how codes were transformed or generated to fill the voids. Punctuality’s representation of these codes, made it a, if not the, Victorian value par excellence.