Going back 14 years there was a panic in the stock market on April 14, 2000. This is little known.
Bleak Friday on Wall Street
April 14, 2000
But the statistical standout could be this: the Nasdaq fell more than 25 percent this week, trouncing the 19 percent fall that began Oct. 21, 1987, Black Monday.
http://money.cnn.com/2000/04/14/markets ... s_newyork/The Nasdaq composite index shed 355.61 points, or over 9 percent, to 3,321.17, its biggest one-day decline on record.
This should say October 19, 1987.
What's also known is that, so far, many of the various stock market indexes have made their highs near the time they made their year 2000 highs.
The next piece of the puzzle is that when the market made its high on April 26, 2010, the flash crash occurred 10 days after that high. 10 days after April 4 is April 14. A similar thing happened in 2007. The stock market made its closing high on October 9, 2007, then fell hard 10 days later, on the anniversary of the 1987 crash.
Also mentioned recently is that 2 of 3 Crisis Wars for the US started in mid April - the Civil War on April 12, 1861 and the Revolutionary War on April 19, 1775.