100% verified The same day, three eras.
20 October
Contemporary era
1973
Sydney Opera House opens
On 20 October 1973, the Sydney Opera House was opened by Queen Elizabeth II.
Sources and verification (1)
- Encyclopaedia Opera de Sydney (Wikipedia) Wikipedia. 4/5
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Contemporary era
1827
Battle of Navarino
On 20 October 1827, the allied fleets destroyed the Ottoman fleet at Navarino, aiding Greek independence.
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- Encyclopaedia Bataille de Navarin (Wikipedia) Wikipedia. 4/5
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From the Middle Ages to the Enlightenment
1714
Coronation of George I
On 20 October 1714, George I was crowned King of Great Britain, beginning the House of Hanover.
Sources and verification (1)
- Encyclopaedia George Ier (Wikipedia) Wikipedia. 4/5