CREATE TABLE table_10942 ("Date" CLOB, "Track" CLOB, "Race" CLOB, "Distance" CLOB, "Purse  (  US$  ) " CLOB, "Surface track" CLOB, "Winning horse" CLOB, "Winning jockey" CLOB)

What Date is Northern Spur Breeders' Cup Stakes Race?
SELECT "Date" FROM table_10942 WHERE "Race" = 'northern spur breeders'' cup stakes'
SELECT "Date" FROM "table_10942" WHERE "Race" = 'northern spur breeders'' cup stakes'