Choose the correct alternative.

Official celebrations to mark Sovereigns' birthday have often _______ on a day other than the actual birthday, particularly when the actual birthday _______ in the summer. King Edward VII, for example, _______ on 9 November, but his official birthday was marked _______ his reign in May or June when there was a greater likelihood of good weather for the Birthday Parade, also _______ as Trooping the Colour.

https://www.royal.uk/queens-birthday