CREATE TABLE table_55668 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Date" TEXT)

On which date did the away team score 3.4 (22)?
SELECT "Date" FROM table_55668 WHERE "Away team score" = '3.4 (22)'
SELECT "Date" FROM "table_55668" WHERE "Away team score" = '3.4 (22)'