CREATE TABLE table_name_10 (date VARCHAR, circuit VARCHAR, fastest_lap VARCHAR)

What date was the circuit, snetterton, when riki christodoulou had the fastest lap?
SELECT date FROM table_name_10 WHERE circuit = "snetterton" AND fastest_lap = "riki christodoulou"
SELECT "date" FROM "table_name_10" WHERE "circuit" = "snetterton" AND "fastest_lap" = "riki christodoulou"