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) Black Friday sales continued to grow in popularity. For the 2nd consecutive year, Black Friday was the highest day for retail traffic during the holiday season, followed by Thanksgiving and Cyber Monday. The highest year-over-year increases in visits took place on Cyber Monday and Black Friday with growth of 16% and 13%, respectively. In 2013, Cyber Monday online sales grew by 18% over the previous year, hitting a record $1.73 billion, with an average order value of $128. In 2014, Cyber Monday was the busiest day of the year with sales exceeding $2 billion in desktop online spending, up 17%