Also Black Monday, Black Tuesday, etc. A day of economic catastrophe, as in We fearedthere’d be another Black Friday. This usage dates from September 24, 1869, a Friday whenstock manipulators Jay Gould and James Fisk tried to corner the gold market and caused itscollapse. The adjective black has been appended to similar occasions ever since, includingOctober 29, 1929, the Tuesday of the market collapse that marked the start of the GreatDepression, and Black Monday of October 19, 1987, when the stock market experienced itsgreatest fall since the Great Depression. 2. Any day marked by great confusion or activity, as in It was just my luck to be traveling onBlack Tuesday. This usage, too, is based on the events of 1869, marked by economic chaos. Ithas since been extended to other kinds of confusion, such as an accident hampering trafficduring the evening rush hour.… https://idioms.thefreedictionary.com/Black+Friday https://idioms.thefreedictionary.com/Black+Friday
