100% verified The same day, three eras.
23 September
Contemporary era
1889
Nintendo founded
On 23 September 1889, Fusajiro Yamauchi founded Nintendo, at first a maker of playing cards.
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- Encyclopaedia Nintendo (Wikipedia) Wikipedia. 4/5
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Contemporary era
1846
Discovery of Neptune
On 23 September 1846, the planet Neptune was first observed, matching Le Verrier's calculations.
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- Encyclopaedia Neptune (Wikipedia) Wikipedia. 4/5
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From the Middle Ages to the Enlightenment
1122
Concordat of Worms
On 23 September 1122, the Concordat of Worms ended the Investiture Controversy.
Sources and verification (1)
- Encyclopaedia Concordat de Worms (Wikipedia) Wikipedia. 4/5