Black Friday (shopping) spending for Sunday. The survey estimates number of shoppers, not number of people. The length of the shopping season is not the same across all years: the date for Black Friday varies between November 23 and 29, while Christmas Eve is fixed at December 24. 2012 had the longest shopping season since 2007. Black Friday (shopping) Black Friday is an informal name for the Friday following Thanksgiving Day in the United States, which is celebrated on the fourth Thursday of November. The day after Thanksgiving has been regarded as the beginning of America's Christmas shopping season since 1952, although the
Leap year starting on Friday share this characteristic. Leap years that begin on Friday, along with those that start on Sunday, occur most frequently: 15 out of the 97 (≈ 15.5%) total leap years in a 400-year cycle of the Gregorian calendar. Thus, the overall occurrence is thus 3.75% (15 out of 400). Like all leap year types, the one starting with 1 January on a Friday occurs exactly once in a 28-year cycle in the Julian calendar, i.e. in 3.57% of years. As the Julian calendar repeats after 28 years that means it will also repeat after 700 years, i.e. 25 cycles. The year's