the Official Birthday
/ði əˌfɪʃl ˈbɜːθdeɪ/
/ði əˌfɪʃl ˈbɜːrθdeɪ/
- a Saturday in June, when the birthday of the British king or queen is officially celebrated, though it is not their real birthday. It is marked by the ceremony known as Trooping the Colour and by the announcement of the Birthday Honours.
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the Official Birthday