CREATE TABLE table_51888 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

Which Date has an Away team score of 16.13 (109)?
SELECT "Date" FROM table_51888 WHERE "Away team score" = '16.13 (109)'
SELECT "Date" FROM "table_51888" WHERE "Away team score" = '16.13 (109)'