CREATE TABLE table_74709 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Game site" TEXT, "Attendance" TEXT)

What day did they play at candlestick park?
SELECT "Date" FROM table_74709 WHERE "Game site" = 'candlestick park'
SELECT "Date" FROM "table_74709" WHERE "Game site" = 'candlestick park'