What's the date of the first airing of the episode with series number 63?
CREATE TABLE "table1_10718192_2" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "u_s_viewers_millions" text
);
SELECT "original_air_date" FROM "table1_10718192_2" WHERE "no_in_series"=63;