https://docs.google.com/document/u/2/d/e/2PACX-1vQm_78cjncvtC-z8P-LiuVHksrvexv5GJgmyS847d_cLljwxPkora6lmAlZE7wJNgzVFiXvxIsVF46Q/pub
These deadlines are set in Tabroom for technical purposes. Always consult the invitation or tournament notices for official policies about deadlines and procedures.