CREATE TABLE table_33044 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

On what date did the away team score 12.9 (81)?
SELECT "Date" FROM table_33044 WHERE "Away team score" = '12.9 (81)'
SELECT "Date" FROM "table_33044" WHERE "Away team score" = '12.9 (81)'