King Charles III and the Queen Consort are to pay their first official visit to Cardiff following the death of Her Majesty the Queen on Friday.
It will be the third of the couple's official engagements after attending ceremonies in Belfast and Edinburgh.
More details have now been confirmed by the King's spokesman, including that the new King will arrive in Wales by helicopter and be greeted by a 21-gun salute.
The King's spokesman also confirmed that he and the Queen Consort intend to meet members of the public at each of their stops in the Welsh capital.
Here's what we know so far.
1. Helicopter arrival and gun salute
His Majesty the King and the Queen Consort will arrive in Wales by helicopter, though the location of the helicopter arrival and timings have not been revealed.
The arrival of the King's helicopter will be marked by a 21-gun salute.
2. Llandaff Cathedral
His and Her Majesty's first engagement will be at Llandaff Cathedral, for a service to remember the life of Queen Elizabeth II.
The couple will be greeted at the cathedral by the Lord Lieutenant of SouthGlamorgan.
Prayers and a time for reflection will be held in the 12th century building for the King and Queen Consort alongside some of Wales' most senior clergy.
The Archbishop will give the address and the First Minister will be called upon to givea reading.
The National Service of Remembrance will be broadcast live on the BBC.
After the service has taken place, the King and the Queen Consort will undertake ashort walkabout on Llandaff Green to meet with school children and members of thelocal community.
3. Motion of Condolence at the Senedd
The Royal couple will then visit the Senedd in Cardiff Bay.
They will be greeted by the First Minister Mark Drakeford and Presiding Officer Elin Jones before moving into the Senedd's debating chamber where the First Minister will stand to propose the Motion of Condolence.
King Charles III will stand to reply.
King Charles III and The Queen Consort will also receive a Motion of Condolence.
After the session has taken place, Their Majesties will view condolence messages before meeeting Members of the Youth Parliament.
Upon departure, the King and Queen Consort will meet members of the public.
4. Visit to Cardiff Castle
A reception will then take place at Cardiff Castle where the King will hold a private audience with Mark Drakeford and the Presiding Officer of the Senedd, Elin Jones.
The public are invited to line the route to welcome the King and Queen Consort as they approach Cardiff Castle in the afternoon, and to wave goodbye as they depart.
The motorcade will drive along St Mary Street enroute to the castle and it is expected large crowds will gather in advance of their arrival.
The Welsh Government says the public are welcome to gather in the grounds of the castle, where the King and Queen Consort are expected to meet with the crowds after the reception, but entry will be allocated on a first come, first served basis.
The opening time for public entry through the castle's main gate is yet to be decided, but very long queues are expected to start building from early in the day.
Only the first 2,000 people will be able to attend the event in the Castle, the Welsh Government says.
5. Meeting with charities
After receiving the First Minister and the Presiding Officer at the castle, the King and Queen Consort proceed to the castle's Banqueting Hall where they will join guests including representatives of Royal Patronages and Members of Faith Communities at a reception.
It is expected that the King's visit to Wales' capital city will end with the King and the Queen Consort greeting members of the public in the castle grounds before departing.
The visit comes after Charles III was officially proclaimed as King in Wales on Sunday at an event at Cardiff Castle.
On the same day, William, the new Prince of Wales spoke of his "affection" for Wales and how it will be an "honour" to serve the Welsh people.
Prince William also spoke with the First Minister over the phone on Sunday, thanking him for his "fitting tribute" to his grandmother, following her death.
He revealed in the telephone conversation that he would be travelling to the country "at the earliest opportunity" to meet Mark Drakeford and other political leaders in person.
A statement from Kensington Palace said: "HRH expressed his and The Princess of Wales's honour in being asked by His Majesty The King to serve the Welsh people.
"They will do so with humility and great respect.
"The prince acknowledged his and the princess's deep affection for Wales, having made their first family home in Anglesey including during the earliest months of Prince George's life.
"The prince and princess will spend the months and years ahead deepening their relationship with communities across Wales.
"They want to do their part to support the aspirations of the Welsh people and to shine a spotlight on both the challenges and opportunities in front of them.
"The prince and princess look forward to celebrating Wales' proud history and traditions as well as a future that is full of promise.
"They will seek to live up to the proud contribution that members of the royal family have made in years past."
Charles III was originally created the Prince of Wales by the Queen when he was just nine years old, with the title belonging to him for more than 64 years.
The title of Prince of Wales has long been used for heirs to the throne but it is not an automatic right and is the choice of the sovereign to award it.
Catherine, has become the first person since Diana, Princess of Wales to use the title.
Tributes to the Queen were made by politicians during a special session of the Senedd on Sunday. Mark Drakeford said that growing democracy in Wales will be a lasting legacy of the Queen.
"We must look forward and use the strength we have here in this democratic forum of Wales to fashion that future, by drawing inspiration from those who have helped to make us what we are."
Welsh Conservative leader Andrew RT Davies praised the Queen's "unique gift of being able to focus on you as the individual, have you at the centre of that conversation and make you feel that you're the person, the only person, talking to her in that room."
Following Her Majesty death, books of condolence have now been opened across Wales including one at City Hall by Council leader Huw Thomas.
An online book of condolence is available on the Royal Family's website.
The remarkable life of the Queen remembered in our latest episode of What You Need To Know