Why September 11th For The Pull Out?

Why was September 11th chosen for the pull out date in Afghanistan? It's a finger in the eye for those who understand and a nod to our enemies. We are at war and have been for a very long time. Wake up! The link below will help to fill you in on the trajectory of the last 100 years.
https://intelreform.org/2021/04/23/trapped-in-the-scheme-of-fires-in-the-long-march-rich-higgins/