Here’s the schedule for this September- the 23rd looks ok to me, but the really biggie is the 13th.
http://www.freerepublic.com/focus/f-bloggers/3327554/posts
I had in mind that it was the date (Elul 29) referred to in The Harbinger by Jonathan Cahn, but in 2015 it is Sept. 13 and not the 23rd & that’s what your link shows. I’ve read the book - it’s fascinating, if nothing else.
Here’s another good link:
http://www.wnd.com/2012/05/mark-this-date-for-potential-disaster
“Its also worth noting that Elul 29, 2015, represents the eve of the Feast of Trumpets or Rosh Hashana at sundown. An unusual astronomical phenomenon, a blood red moon or tetrad is expected to occur that evening, according to NASA. The Feast of Trumpets begins a period known by Jews as the days of awe that lasts through Yom Kippur a week later.”