CREATE TABLE table_name_8 (date VARCHAR2, class VARCHAR2, race VARCHAR2)

On which date was the GT class at Monterey Sports Car Grand Prix?
SELECT date FROM table_name_8 WHERE class = "gt" AND race = "monterey sports car grand prix"
SELECT "date" FROM "table_name_8" WHERE "class" = "gt" AND "monterey sports car grand prix" = "race"