CREATE TABLE table_67932 ("Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Loss" TEXT, "Attendance" FLOAT, "Record" TEXT)

On what date was the opponent the White Sox and the record 18-13?
SELECT "Date" FROM table_67932 WHERE "Opponent" = 'white sox' AND "Record" = '18-13'
SELECT "Date" FROM "table_67932" WHERE "Opponent" = 'white sox' AND "Record" = '18-13'