[[16th century|1519]] – Ferdinand Magellan sets sail with about 270 men, which ultimately culminates into the first circumnavigation of [[Earth|the world]]. <br>
[[1911]] – Navigational instruments were first requested for use on naval aircraft.<br>
[[1951]] – "Operation Summit": the first combat helicopter landing in history occurred when US marines landed in Korea.
<noinclude>[[Category:On This Day|264]]</noinclude>
[[category:timeline]]