CREATE TABLE table_204_615 (id DECIMAL, "date" TEXT, "opponent" TEXT, "result" TEXT, "goal scorers  ( season goals ) " TEXT, "goalie saves" TEXT, "attendance" TEXT)

in which month were more games played - september or october ?
SELECT "date" FROM table_204_615 WHERE "date" IN (9, 10) GROUP BY "date" ORDER BY COUNT(*) DESC LIMIT 1
SELECT "date" FROM "table_204_615" WHERE "date" IN (9, 10) GROUP BY "date" ORDER BY COUNT(*) DESC NULLS LAST LIMIT 1