Comment by throw0101a

The week was an existing structure in Christian-based societies but not to the extent that it seems to have been the at the end of nineteenth-century versus the beginning, i.e., there is documentary evidence that people treated the 'seven day cycle' differently in 1800 versus 1899 (in the US):

> A substantial portion of the research [in the book] is based on nineteenth-century diaries, correspondence, and courtroom testimony to illustrate how ordinary Americans internalized weekly rhythms. The shift from almanacs, which organized dates by month, to preformatted diary books structured by the week reflected and reinforced changing temporal habits. The book examines diverse subjects including freed slaves, physicians, and children from elite families to demonstrate the breadth of weekly consciousness across social groups. […]