“Blue Monday” reported as a scam - It was Cliff Arnall in 2005, who at the time claimed to be a psychologist at Cardiff University in Wales, had invented an equation to calculate which day of the year could be most depressing. The result was the third Monday in January. Some shops will make you believe this by offering 20% 30% discounts. However, the hoax was reportedly discovered in 2010 by a reporter for the Guardian newspaper who discovered that Cliff Arnall had been paid by an advertising company. Arnall eventually admitted the truth adding that he "Encouraged people to refute the very idea of a very depressing day and use it as a springboard for the things that really matter in your life,".