Sweeps:
https://docs.google.com/spreadsheets/d/1Dk3mmWGv38v8fZOp2c0ApufdLHOgJ74uAayWxHq5iLY/pubhtml
Congress:
https://docs.google.com/spreadsheets/d/1nLGtUz1djQdE_DcTByJGo1UfXq0Sj7PIxEKSOTyMMZg/pubhtml
These deadlines are set in Tabroom for technical purposes. Always consult the invitation or tournament notices for official policies about deadlines and procedures.