Blue Monday (date) Blue Monday (date) Blue Monday is a name given to a day in January (typically the third Monday of the month) claimed to be the most depressing day of the year. The concept was first publicised as part of a 2005 press release from holiday company Sky Travel, which claimed to have calculated the date using an equation. It takes into account weather conditions and thus only applies to the Northern Hemisphere. The idea is considered pseudoscience, with its formula derided by scientists as nonsensical. This date was published in a press release under the name of Cliff Arnall, at
Cyber Monday 8-day period ("Cyber Monday week") beginning on the Monday before Thanksgiving. In the Netherlands, the term Cyber Monday was first used in 2012. Since then, Dutch online retailers have taken advantage of Cyber Monday in promotional purposes, because it is perfectly timed before the celebration of Sinterklaas which is celebrated by buying gifts for each other in Netherlands. Since 2012, the popularity of Cyber Monday has grown strongly every year in the Netherlands. In total there were 105 participating online stores during the Cyber Monday period of 2017. In Portugal, the term Cyber Monday was first used in 2009. In