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
Green Monday the season behind Cyber Monday and Dec. 4, 2012 (which had no marketing tie-in), according to comScore. In 2014, Green Monday online sales grossed a record $1.6 billion, albeit still lower than Cyber Monday's $2.68 billion during the same year. Green Monday Green Monday is an online retail industry term similar to Cyber Monday. The term was coined by eBay in 2007 to describe the best sales day in December, usually the second Monday of December. Green Monday is defined more specifically by business research organization comScore as the last Monday with at least 10 days prior to Christmas. In