* 1543/8/16 [[Miyoshi Chokei|Miyoshi Chôkei]] defeats [[Hosokawa Ujitsuna]] and captures [[Sakai]] in [[Settsu province]].
* 1543/8/16 [[Miyoshi Chokei|Miyoshi Chôkei]] defeats [[Hosokawa Ujitsuna]] and captures [[Sakai]] in [[Settsu province]].
−
* 1543/8/25 Portugese sailors shipwreck on [[Tanegashima]], becoming the first Europeans encountered by the Japanese.
+
* 1543/8/25 Three Portugese sailors shipwreck on [[Tanegashima]], becoming the first Europeans encountered by the Japanese. A local ''daimyô'' purchases two [[teppo|guns]] from them, commissions his swordsmith to make more, and arranges for marksmanship lessons from the shipwrecked Portuguese.