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_30591 ( "Version" text, "Release" text, "Release date" text, "End of maintenance" text, "Requirement" text )

### Question ###
When's the end of maintenance in the august 11, 2013 release date?

### Accurate SQL ###

SELECT "End of maintenance" FROM table_30591 WHERE "Release date" = 'August 11, 2013'