Black Friday Sale Black Friday Sale Black Friday Sale is a joint sales initiative by hundreds of online vendors in Germany, Austria and Switzerland, inspired by the American Black Friday. The event was first launched on 28 November 2013: Over its 24-hour run, more than 1.2 million people visited the site, making it the single largest online shopping event in German speaking countries. Many leading online retailers such as Zalando, Disney Store, Saturn, Galeria Kaufhof, Deichmann, The Body Shop, Sony, Yves Rocher and Dell participated in the event in 2013. Once the Black Friday Sale started at 7 pm on 28 November 2013,
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