100% verified The same day, three eras.

17 March

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Contemporary era

1958

Launch of Vanguard 1

On 17 March 1958, the US orbited Vanguard 1, still the oldest artificial satellite in orbit.

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Contemporary era

1861

Kingdom of Italy proclaimed

On 17 March 1861, Victor Emmanuel II was proclaimed King of Italy, completing unification.

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Antiquity

c. 461

Death of Saint Patrick

Around 17 March 461, Saint Patrick, evangeliser and patron of Ireland, died.

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