Also, if we look back ten years ago to the day of the week, that would be October 9, 2008 - also a Thursday and check out this factoid:

"The Dow would plummet 3,600 points from the September 19, 2008, intraday high of 11,483 to the October 10, 2008, intraday low of 7,882."

>50%

Read more: The Fall Of The Market In The Fall Of 2008 [link to www.investopedia.com (secure)]