On September 29, 2008 the politicians got involved (or rather, didn't get involved) and responded to the proposal from Treasury Secretary Paulson that he become Czar of all he looked upon, to which the Congress replied "Ummmm, no" The DJIA dropped a then-record 777 points, and the markets didn't reach bottom until the second week of March 2009.
The good news was
Enough history, here's the mystery:
Usually that second low for March 9 at just before 6:00pm EDT would be very constructive, undercutting the earlier low and flushing out any traders hanging on for dear life. In this case though we are betting on the politicians coming together so who knows.