Two things in the atlas are tied to this date. Each is placed here by a source that gives the day.
In August 1924, when Mars passed close to Earth, the US Navy ordered the country's radio stations quiet for a five-minute pause every hour from 21 to 24 August, so listeners could pick up any signal from Mars.
A report from August 1955, from a farmhouse at Kelly, near Hopkinsville, Kentucky, where the family said small beings attacked them for hours.