Black Friday Sale more, several hundred leading online vendors will be involved, among them Douglas Holding, HP, Sony, Tally Weijl and Weltbild. eBay and PayPal are also featured as official partners of the event. 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,
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