Timeline Saturday 20 October 1973

2nd Millennium › 20th Century › 1970s › 1973 › October 1973 › 20 October 1973

Saturday 20 October 1973

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All times in UTC · Dashed edge = started before, or continues beyond, this day

Events on Saturday 20 October 1973 1

1973 Sydney Opera House Opens in Australia The Sydney Opera House was officially opened by Queen Elizabeth II on October 20, 1973, becoming one of the most iconic buildings of the 20th century.

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