Name the guest 4 for 8 december
CREATE TABLE "table1_20466963_13" (
  "date" text,
  "presenter" text,
  "guest_1" text,
  "guest_2" text,
  "guest_3" text,
  "guest_4" text
);
SELECT "guest_4" FROM "table1_20466963_13" WHERE "date"='8 December';