Debates about patterns of time use in eighteenth- and nineteenth-century Britain go back to the seminal work of E. P. Thompson in the 1960s. But the lack of systematic evidence means that many of these questions remain unresolved. In an attempt to advance those debates, this essay uses three catalogs of political events to reconstruct the working week in Britain over the long nineteenth century. Three patterns emerge. First, observance of Saint Monday appears to have been widespread in the early nineteenth century before declining slowly in the mid-1800s, a process that happened faster in factory towns than elsewhere. This finding supports the orthodox narrative about Saint Monday against its recent challengers (in particular Hans-Joachim Voth). Second, I find that political organizers in the early nineteenth century were reluctant to profane the Sabbath by arranging public meetings on Sundays, but that this came to an end during the heyday of Chartism. Third, these catalogs also provide some, more speculative, evidence that the working day and the working week became more ordered as the nineteenth century wore on.