Some people view their absence from the historical event as a snub to the royal family, and some may even suggest that it is because Harry is not happy with his father's coronation.
The Duke and Duchess of Sussex have relocated to the United States and want their children, Archie and Lilibet, to play a prominent role in the coronation alongside Prince William and Kate Middleton's children.
They have also requested to appear on the balcony of Buckingham Palace with senior royals to wave to the crowds once the King has been crowned.
These requests have caused concern that their demands could cause chaos for the coronation. However, it is being speculated that King Charles III will not give in to Harry and Meghan's requests.