CREATE TABLE table_16388439_3 (date VARCHAR, home_team VARCHAR, ground VARCHAR)

Name the date for adelaide for westpac stadium
SELECT date FROM table_16388439_3 WHERE home_team = "Adelaide" AND ground = "Westpac Stadium"
SELECT "date" FROM "table_16388439_3" WHERE "Adelaide" = "home_team" AND "Westpac Stadium" = "ground"