Link to w9:
https://drive.google.com/file/d/0B7jlksjYSOl-bkZKUGlTQ2VIcVE/view?usp=sharing&resourcekey=0-2X2c5nPOkRJKMP_H4rQwZA
These deadlines are set in Tabroom for technical purposes. Always consult the invitation or tournament notices for official policies about deadlines and procedures.