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_91 ( date VARCHAR, winning_driver VARCHAR, race_name VARCHAR )

### Question ###
What is the date that the winner driver is Stirling Moss in the race named vi grand prix de caen?

### Accurate SQL ###

SELECT date FROM table_name_91 WHERE winning_driver = "stirling moss" AND race_name = "vi grand prix de caen"