SELECT "Deorbit date" FROM table_44449 WHERE "Launch date" = '9 march 2008'
When did the ATV that launched on 9 March 2008, deorbit?
CREATE TABLE table_44449 (
    "Designation" text,
    "Name" text,
    "Launch date" text,
    "ISS docking date" text,
    "Deorbit date" text
)