CREATE TABLE table_54830 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

When st kilda played as the away team, what date was that?
SELECT "Date" FROM table_54830 WHERE "Away team" = 'st kilda'
SELECT "Date" FROM "table_54830" WHERE "Away team" = 'st kilda'