Another Document to look at is this:-
ei: The Sharm el-Sheikh Memorandum (4 September 1999)
Please scroll down to bottom, signed on 4th Sept 1999, but came into effect one week later on 11th September 1999.
I know the big deal as to why 11th September has been used so much, but does Cogburn and KSigMason?
Obviously i don't need to put in a link to the Pentagons Groundbreaking ceremony?