When did the ATV that launched on 9 March 2008, deorbit?
CREATE TABLE "atv_missions" (
  "designation" text,
  "name" text,
  "launch_date" text,
  "iss_docking_date" text,
  "deorbit_date" text
);
SELECT "deorbit_date" FROM "atv_missions" WHERE "launch_date"='9 march 2008';