English version

golden jubilee

From Longman Dictionary of Contemporary Englishgolden jubileeˌgolden ˈjubilee noun [countable] British English  CELEBRATEthe date that is exactly 50 years after an important event, such as the occasion when someone became king or queen syn golden anniversary American Englishdiamond jubilee, silver jubilee the Queen’s golden jubilee celebrations
Examples from the Corpus
golden jubileeThe highlight of Gibson's later years was the Polyethylenes 1933-83 golden jubilee conference in London in June 1983.
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