How many dates was knockhill?
CREATE TABLE table_24547593_1 (date VARCHAR, circuit VARCHAR)
SELECT COUNT(date) FROM table_24547593_1 WHERE circuit = "Knockhill"
### Context: CREATE TABLE table_24547593_1 (date VARCHAR, circuit VARCHAR) ### Question: How many dates was knockhill? ### Answer: SELECT COUNT(date) FROM table_24547593_1 WHERE circuit = "Knockhill"