Black Friday — Friday after Thanksgiving Day. The traditional Christmas season of sales starts at this day. Custom to organize sales at this day was established in the 19th century, and the term "Black Friday" has appeared in 1966 and was first used generally on East coast of the USA. Because Thanksgiving Day falls on the fourth Thursday of November, Black Friday drops out in a period from November 23 to November 30

Cas we're the Russian company, we have decided to stand on the principle and to make... Black Monday, Black Tuesday and Black Wednesday, because we have custom in Russia — celebrate three days in a row.