CREATE TABLE table_11168 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What day did South Melbourne play as the away team?
SELECT "Date" FROM table_11168 WHERE "Away team" = 'south melbourne'
SELECT "Date" FROM "table_11168" WHERE "Away team" = 'south melbourne'