CREATE TABLE table_73691 ("Series #" FLOAT, "Season #" CLOB, "Episode" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Viewers  ( in millions ) " CLOB)

If the amount of viewers is 2.48 million, what is the original air date?
SELECT "Original air date" FROM table_73691 WHERE "Viewers (in millions)" = '2.48'
SELECT "Original air date" FROM "table_73691" WHERE "Viewers (in millions)" = '2.48'