CREATE TABLE table_32642 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What day does the away team score 7.8 (50)?
SELECT "Date" FROM table_32642 WHERE "Away team score" = '7.8 (50)'
SELECT "Date" FROM "table_32642" WHERE "Away team score" = '7.8 (50)'