who came up with the term black friday
Black Friday (shopping) The earliest evidence of the phrase Black Friday applied to the day after Thanksgiving in a shopping context suggests that the term originated in Philadelphia, where it was used to describe the heavy and disruptive pedestrian and vehicle traffic that would occur on the day after Thanksgiving. This usage dates to at least 1961. More than twenty years later, as the phrase became more widespread, a popular explanation became that this day represented the point in the year when retailers begin to turn a profit, thus going from being "in the red" to being "in the black".[7][8][9][10]
Workweek and weekend The present-day concept of the relatively longer 'week-end' first arose in the industrial north of Britain in the early part of nineteenth century[1] and was originally a voluntary arrangement between factory owners and workers allowing Saturday afternoon off from 2pm in agreement that staff would be available for work sober and refreshed on Monday morning.[2] The Oxford English Dictionary traces the first use of the term weekend to the British magazine Notes and Queries in 1879.[8]