CREATE TABLE table_21920 ("Year" FLOAT, "Date" TEXT, "Driver" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Miles  ( km ) " TEXT, "Race Time" TEXT, "Average Speed  ( mph ) " TEXT)

What date did Jamie McMurray win the race?
SELECT "Date" FROM table_21920 WHERE "Driver" = 'Jamie McMurray'
SELECT "Date" FROM "table_21920" WHERE "Driver" = 'Jamie McMurray'