Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_24399615_4 (airdate VARCHAR, cable_rank VARCHAR)
### Question:
What date did the episode air that had a ranking of 17 for cable?
### Answer:
SELECT airdate FROM table_24399615_4 WHERE cable_rank = "17"