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_73 ( airing_date VARCHAR, number_of_episodes VARCHAR, genre VARCHAR )

### Question ###
What was the airing date when the number of episodes was larger than 20 and had the genre of costume action?

### Accurate SQL ###

SELECT airing_date FROM table_name_73 WHERE number_of_episodes > 20 AND genre = "costume action"