Two things in the atlas are tied to this date. Each is placed here by a source that gives the day.
A brigantine found drifting in the Atlantic off the Azores on 4 December 1872 with nobody aboard. None of the ten who sailed on her, the captain's wife and two-year-old daughter among them, was seen or heard of again.
On 7 November 2006, United Airlines workers at O'Hare Airport in Chicago reported a spinning disk hanging below the clouds over Concourse C.