CREATE TABLE table_30119 ("Episode #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Originalairdate" TEXT, "Viewers  ( millions ) " TEXT)

What was the original air-date that had 4.77 million viewers?
SELECT "Originalairdate" FROM table_30119 WHERE "Viewers (millions)" = '4.77'
SELECT "Originalairdate" FROM "table_30119" WHERE "Viewers (millions)" = '4.77'