CREATE TABLE table_79745 ("Season" TEXT, "Launch date" TEXT, "Final date" TEXT, "Days" FLOAT, "Housemates" FLOAT, "Winner" TEXT)

What final date had 16 housemates?
SELECT "Final date" FROM table_79745 WHERE "Housemates" = '16'
SELECT "Final date" FROM "table_79745" WHERE "Housemates" = '16'