CREATE TABLE table_52918 ("Date" TEXT, "Competition" TEXT, "Venue" TEXT, "Result" TEXT, "Score" TEXT, "Goals" TEXT)

What date was a game played at Headingley Stadium?
SELECT "Date" FROM table_52918 WHERE "Venue" = 'headingley stadium'
SELECT "Date" FROM "table_52918" WHERE "Venue" = 'headingley stadium'