Black Friday (shopping) the holiday season, beginning on the day after Thanksgiving. When this was recorded in the financial records, once-common accounting practices would use red ink to show negative amounts and black ink to show positive amounts. Black Friday, under this theory, is the beginning of the period when retailers would no longer be "in the red", instead taking in the year's profits. The earliest known published reference to this explanation occurs in "The Philadelphia Inquirer" for November 28, 1981. In 2013, an internet rumor alleged that the phrase originated in the American south before the Civil War, from the practice of
Leap year starting on Friday Leap year starting on Friday A leap year starting on Friday is any year with 366 days (i.e. it includes 29 February) that begins on Friday 1 January and ends on Saturday 31 December. Its dominical letters hence are CB, such as the years 1904, 1932, 1960, 1988, 2016, 2044, 2072, and 2112 in the Gregorian calendar or, likewise, 2000 and 2028 in the obsolete Julian calendar. Any leap year that starts on Tuesday, Friday or Saturday has only one Friday the 13th; The only Friday the 13th in this leap year occurs in May. Common years starting on Saturday