Finally after all the buying, spending, and investing, the stock market officially crashes naming this day "Black Tuesday", naming this the worst economic crash in history. This event occurs numerous other times in history but not as significant as this; in other words, there will always be high points and low points in the economy and history Black Monday (1987) - Wikipedia Black Monday on October 19, 1987 is the name commonly attached to a sudden, severe, and largely unexpected stock market crash that struck the global financial market system. In the United States, the Dow Jones Industrial Average (DJIA) fell exactly 508 points (22.6%), accompanied by crashes in the futures and options markets. This was the largest one-day percentage drop in Dow Jones history.