As his mother Queen Elizabeth II did before him, the King celebrates his birthday twice a year.
Why do Monarchs have two birthdays?
The two-birthday tradition began in 1748, when King George II decided that the summertime was much better weather for a parade than his actual birthday month of November.
The first celebration takes place on June 17th, with a procession known as Trooping the Colour; an impressive display of soldiers, horses, musicians and RAF planes to mark the Sovereign’s official birthday.
Prince William, who is next-in-line, may be the first King to break this tradition as his birthday already falls in June.
How will the King celebrate his actual birthday?
On the King’s actual birthday, November 14th, he has decided to mark the occasion with the announcement of the Coronation Food Project.
Speaking on the project, His Majesty said: ‘Food need is as real and urgent a problem as food waste – and if a way could be found to bridge the gap between them, then it would address two problems in one.
‘To mark my 75th birthday in this Coronation year, it is my greatest hope that the Coronation Food project will find practical ways to do just that.’
King Charles began his birthday festivities yesterday with a party at Highgrove House.
He celebrated the occasion with a three-tier cake and performance from a rock choir.
It is expected that the King will spend the evening at a private dinner with close family and friends at Clarence House.
Will Prince Harry be in attendance?
The King’s son Prince Harry and his wife Meghan Markle have been left out from the royal celebrations, and will not be in London for the events.
The Duke and Duchess of Sussex stepped down from their royal duties in January of 2020, due to constant media scrutiny and security concerns.
Following their departure from the royal family, they were stripped of their titles and lost much of their relationships with the family.
Speaking about King Charles in a Netflix documentary, Harry said: “Forgiveness is 100 per cent a possibility because I would like to get my father back. I would like to have my brother back. At the moment, I don’t recognise them, as much as they probably don’t recognise me.”
The father and son reportedly will however share a telephone call today, which some are speculating may be the beginning of peace between the two.