Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_23465864_3 (sat_29_aug VARCHAR, rider VARCHAR)
### Question:
When  roy richardson 476cc aermacchi is the rider what is the time for saturday august 9th?
### Answer:
SELECT sat_29_aug FROM table_23465864_3 WHERE rider = "Roy Richardson 476cc Aermacchi"