Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_68 ( first_airdate VARCHAR, episodes VARCHAR, nielsen_ranking VARCHAR )

### Question ###
What was the first airdate or the season that had less than 24 episodes and a Nielsen ranking of #38?

### Accurate SQL ###

SELECT first_airdate FROM table_name_68 WHERE episodes < 24 AND nielsen_ranking = "#38"