As a non beleiver in that # stuff, I will point out it seems there is a high number of numerologists attaching tin foil hats for that date. They probably have their own TM.
Whether of not we believe in numerology (I do not), the numbers 11 and 19 have significance in Islam, as well as the crescent moon, the stars and the sword.
The odds are that the numerologists will be right on certain numbers (dates). That's just the way it is.
The numbers, the moon cycles, the Muslim holidays, martyrdom celebrations and remembrances and the Islamic Calendar in general seem to be important elements in the eys/minds of some of the Islamist extremist/supporters/terrorists.