The length of 30 minutes aired on what date?
CREATE TABLE table_name_54 (airdate VARCHAR, length VARCHAR)
SELECT airdate FROM table_name_54 WHERE length = "30 minutes"
### Context: CREATE TABLE table_name_54 (airdate VARCHAR, length VARCHAR) ### Question: The length of 30 minutes aired on what date? ### Answer: SELECT airdate FROM table_name_54 WHERE length = "30 minutes"