This is his actual birthday. The official one happens in June. It’s because they would get a parade every year on their birthday, until a King came who had a birthday on a winter day with miserable weather. So then the tradition was to celebrate it on a separate day.
i seem to remember the Queen had 4 birthdays a year or something. Is this the official one or one of the made up ones?
its ok, hes head of the Church. God approved