- A Hanging Rock near Melbourne (Australia), the teenage Miranda McKay and 3 other girls, along with their Scottish governess from Appleyard College, disappear [\[UFO Roundup 4-36\]]{.source}.


- Count Ferdinand von Zeppelin flew his first airship for the first time, the construction of which had begun in 1897.


-   **21 August:** In Telemark (Norway), a man is astonished when a glowing ball explodes near him [\[Bord/Bord: _Modern Mysteries of the World_, 1989, 346\]]{.source}.