CREATE TABLE table_3440 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Director" TEXT, "Writer ( s ) " TEXT, "Airdate" TEXT)

what is the number of series where the airdate is december 26, 1964?
SELECT COUNT("Series #") FROM table_3440 WHERE "Airdate" = 'December 26, 1964'
SELECT COUNT("Series #") FROM "table_3440" WHERE "Airdate" = 'December 26, 1964'