100% verified The same day, three eras.
13 June
Contemporary era
1983
Pioneer 10 leaves the Solar System
On 13 June 1983, Pioneer 10 crossed Neptune's orbit, the first craft to leave the planetary zone.
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- Encyclopaedia Pioneer 10 (Wikipedia) Wikipedia. 4/5
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Contemporary era
1886
Death of King Ludwig II of Bavaria
On 13 June 1886, King Ludwig II of Bavaria was found dead in mysterious circumstances.
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- Encyclopaedia Louis II de Baviere (Wikipedia) Wikipedia. 4/5
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From the Middle Ages to the Enlightenment
1373
Anglo-Portuguese Alliance
On 13 June 1373, the Anglo-Portuguese Alliance, the oldest alliance still in force, was sealed.
Sources and verification (1)
- Encyclopaedia Alliance anglo-portugaise (Wikipedia) Wikipedia. 4/5