It’s a Muslim thing! That’s how they chose 9-11
2+0+1+ 4 = 7
Local man recently in ME with military intelligence explained it to us. If used by military probably something to it
9/12/1683 was the day of the defeat of Muslim forces in the Battle of Vienna. So 9/11 is the date of the high watermark of Muslim penetration into Europe. They’re all about history.