What was the circuit had a race on September 20.
CREATE TABLE table_name_46 (circuit VARCHAR, date VARCHAR)
SELECT circuit FROM table_name_46 WHERE date = "september 20"
### Context: CREATE TABLE table_name_46 (circuit VARCHAR, date VARCHAR) ### Question: What was the circuit had a race on September 20. ### Answer: SELECT circuit FROM table_name_46 WHERE date = "september 20"