CREATE TABLE table_25800134_9 (series__number VARCHAR, airdate VARCHAR)

what is the number of series where the airdate is december 26, 1964?
SELECT COUNT(series__number) FROM table_25800134_9 WHERE airdate = "December 26, 1964"
SELECT COUNT("series__number") FROM "table_25800134_9" WHERE "December 26, 1964" = "airdate"