To recap, using USO as example:
August 14th: Thread is made to sign-up
August 21st: Thread is closed and draws are made
August 21st-August 24th (or whenever the day before actual USO qualies start): Confirmations must take place for people to guarantee their participation in tourney.
August 25th-27th: Qualifying draw
August 28th-September 10th: Main Draw