So if your theory is right the fucking Al Qaeda gang uses that kind of strategy to commit their crimes...Those morons can't count, the only thing they're good at, is putting bombs to hurt people. It is just coincidence man...
Otherwise you can start counting now...
9+11 = 20 ...so the next attack is within 20 days.
Or if you want it closer you have to use 9+1+1=11 ..so within elven days
Or if you the american way of handling dates transforming into the European way... then the next date is on the 9th of november.
