Two things in the atlas are tied to this date. Each is placed here by a source that gives the day.
Janet Douglas, Lady Glamis, died by burning for treason on Castle Hill, Edinburgh, on 17 July 1537. A ghost tradition at Glamis Castle links her name to a Black Lady.
On 17 July 1957 a six-man Air Force crew flying an RB-47 reported an unidentified object that followed the aircraft for over 700 miles from Mississippi to Oklahoma. The Condon Committee listed the case as unidentified.