CREATE TABLE table_31390 ("Season" TEXT, "Season premiere" TEXT, "Season finale" TEXT, "TV season" TEXT, "Ranking" TEXT, "Viewers  ( in millions ) " TEXT)

When was the 3rd season premiere originally aired?
SELECT "Season premiere" FROM table_31390 WHERE "Season" = '3rd'
SELECT "Season premiere" FROM "table_31390" WHERE "Season" = '3rd'