user: Question: Name the date when 33,307 attended
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Kickoff [a ]', 'Game site', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Week', 'Date', 'Opponent', 'Result', 'Kickoff [a ]', 'Game site', 'Attendance', 'Record']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" = '33,307';