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_30 (manner_of_departure VARCHAR, date_of_vacancy VARCHAR)

### Question ###
What was the manner of departure for the vacancy date of 20 September 2009?

### Accurate SQL ###

SELECT manner_of_departure FROM table_name_30 WHERE date_of_vacancy = "20 september 2009"