CREATE TABLE table_3712 ("Episode #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Originalairdate" CLOB, "Ratings" CLOB)

Name the air date for ratings of 2.19 million
SELECT "Originalairdate" FROM table_3712 WHERE "Ratings" = '2.19 Million'
SELECT "Originalairdate" FROM "table_3712" WHERE "Ratings" = '2.19 Million'