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_2880 ( "Rank" real, "Rider" text, "Mon 24 Aug" text, "Tues 25 Aug" text, "Wed 26 Aug" text, "Thurs 27 Aug" text, "Fri 28 Aug" text, "Sat 29 Aug" text )

### Question ###
When roy richardson 476cc aermacchi is the rider what is the time for saturday august 9th?

### Accurate SQL ###

SELECT "Sat 29 Aug" FROM table_2880 WHERE "Rider" = 'Roy Richardson 476cc Aermacchi'