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Blue Monday 2017 could be bluest ever, says expert behind equation


Sarah Knapton, science editor

16 JANUARY 2017 • 7:45AM

Blue Monday could be most depressing ever because of celebrity deaths, anxiety over Brexit, and fears about a Donald Trump presidency in the US, the expert who coined the phrase has warned.

In 2005 Dr Cliff Arnall, formerly of Cardiff University, came up with a light-hearted formula for predicting the gloomiest day of the year based on factors including weather, debts, time since Christmas and motivation.