The 1929 New York market crash day called Black Thursday was Thursday, October 24, 1929.
Black Thursday marked the first major wave of panic selling in the Wall Street Crash of 1929. Trading volume reached a then-record level, and the Dow Jones Industrial Average fell sharply before a group of major bankers bought shares in an effort to stabilize prices. The intervention produced only temporary relief.
The crash continued the following week. Monday, October 28, became known as Black Monday, while Tuesday, October 29, became known as Black Tuesday and brought an even larger collapse in the Dow. These names are often confused because the 1929 crash unfolded across several dramatic sessions rather than on one day alone.