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,
Friday the 13th year being a common year starting on Tuesday (F) (e.g. 2001/02, 2012/13 and 2018/19), or from August to October the following year being a leap year starting on Saturday (BA) (e.g. 1999/2000 and 2027/28). The shortest period that occurs with a Friday the 13th is just one month, from February to March in a common year starting on Thursday (D) (e.g. 2009, 2015 and 2026). Each Gregorian 400-year cycle contains 146,097 days (with 97 leap days) or exactly 20,871 weeks. Therefore, each cycle contains the same pattern of days of the week and thus the same pattern of Fridays that