Prime Minister Mark McGowan said the ceremony would be a “historic occasion”.
He said it would be considered a possible holiday.
Should there be a national holiday for the King’s coronation?
The coronation will take place on Saturday, May 6, with a “Great Coronation Luncheon” and “Coronation Concert” the following day, and an additional holiday on Monday.
The public will be invited on the final day to join “The Big Help Out” by volunteering in their communities.
The coronation itself will be “a solemn religious service, as well as an occasion for celebration and pageantry,” led by Archbishop of Canterbury Justin Welby, the palace said.
The palace reiterated that it will “reflect the role of the Monarch today and look to the future, while taking root in long-standing traditions and pageantry.”
That palace line has been interpreted by experts as an indication that Charles’s coronation will be different and more subdued than the one his late mother experienced seven decades ago, with a shorter ceremony and amendments to some of the ritual’s feudal elements.
Queen Elizabeth’s coronation was the first live televised royal event and lasted three hours.