Elul 29 — the same date as 9/11 and the 2008 Stock Market crash.
I take that back 9/11 happened exactly 7 days earlier—but the largest stock market crash to that point happened on Elul 29 when the markets opened back up on that day. They had been closed from 9/11 till then.
BTW, I have read the Harbinger. Regardless of what people think about it, one cannot deny the series of "coincidences" that are not really coincidences! I know we are supposed to always be ready, but very specially we need to be ready to face our Savior in the coming months. Oh, what a day that will be!!