On this date in 1983 New Order released 'Blue Monday,' as a 12-inch single through Factory Records. The track went on to become the biggest-selling 12-inch single of all time. It reached No. 9 on the UK Singles Chart and spent 38 weeks in the top 75 and spent 186 weeks on the UK Independent Singles Chart, effectively selling for four years until the release of the Substance 1987 compilation on which it featured.
It is also National Dress in Blue Day
Blue. You know what to do