Black Friday (shopping) and 33,100 is the search volume in November 2013, according to the Google Adwords). French businesses are slowly introducing the Black Friday custom into the market. Discounts of up to 85% were given by retailing giants such as Apple and Amazon in 2014. French electronics retailers such as FNAC and Auchan advertised deals online while Darty also took part in this once a year monster Sale. Retailers favored the very American term "Black Friday" to "Vendredi noir" in their advertisements. In 2016, because of the terror attacks in Paris in November the year before, some retailers used the name "Jour
Common year starting on Friday has only one Friday the 13th; The only Friday the 13th in this common year occurs in August. Leap years starting on Thursday share this characteristic, but also have another one in February. This is the only year type where the "n"th "Doomsday" (this year Sunday) is not in ISO week "n"; it is in ISO week "n"-1. In the (currently used) Gregorian calendar, the fourteen types of year (seven common, seven leap) repeat in a 400-year cycle (20871 weeks). Forty-three common years per cycle or exactly 10.75% start on a Friday. The 28-year sub-cycle does only span across century