Friday the 13th etc.) of the year. Any month that starts on a Sunday contains a Friday the 13th, and there is at least one Friday the 13th in every calendar year. There can be as many as three Friday the 13ths in a single calendar year; either in February, March and November in a common year starting on Thursday (such as 2009, 2015 or 2026) (D), or January, April and July in a leap year starting on Sunday (such as 2012) (AG). The longest period that occurs without a Friday the 13th is 14 months, either from July to September the following
Black Friday (shopping) the first company to run a special Black Friday campaign for the German market in 2006. In the first years, mostly internet retailers have used the event as an occasion to attract new customers with discounts, but bricks and mortar stores have already begun to adapt the shopping event. For the first time ever, German customers spent more than €1 billion during the Black Friday weekend in 2016: According to a Centre for Retail Research study, German customers spend around €1.3 billion ($1.54 billion) during the four days from Black Friday to Cyber Monday 2016. In 2015, Swiss retailer Manor