user: Question: What day did they play at Candlestick Park?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '1960-09-11', 'Buffalo Bills', 'W 27–3', 'Polo Grounds', '10,250']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Game site" = 'Candlestick Park';