September 2nd - It was confirmed The Duke and Duchess of Cambridge would be writing a foreword for a new GCHQ puzzle book
September 3rd - Catherine was seen driving around Windsor, where the family recently moved
September 7th - The Duke and Duchess of Cambridge joined their children - Prince George, Princess Charlotte, and Prince Louis - for a 'settling in' day at their new school, Lambrook School
September 8th - Catherine was seen driving in Windsor, shortly after it was announced HM The Queen had fallen ill and members of the Royal Family, including The Duke of Cambridge, would be travelling to Balmoral to be with her. At 3:10pm, Her Majesty Queen Elizabeth II died peacefully at Balmoral
Spetember 9th - Catherine was once again seen driving in the Windsor area. During a speech from King Charles III that evening, William and Catherine became the new Prince and Princess of Wales
September 10th - The Prince and Princess of Wales, along with the Duke and Duchess of Sussex, undertook a walkabout outside of Windsor Castle to meet with members of the public who had gathered to pay their respects to the late Queen
September 13th - The Prince and Princess of Wales were seen arriving at Buckingham Palace, where they joined other members of the royal family to meet the Queen's coffin on its return 'home'
September 14th - The Prince and Princess of Wales joined other members of the royal family at Westminster Hall, where the Queen's coffin was received to begin lying-in-state. The attending family members remained at Westminster Hall for a service for the Reception of the Coffin conducted by the Archbishop of Canterbury and the Dean of Westminster
September 15th - The Prince and Princess of Wales undertook a walkabout in Sandringham to meet with members of the public who had gathered to pay their respects to the late Queen
September 16th - The Prince and Princess of Wales visited Army Training Centre Pirbright to meet Defence Force personnel from Australia, Canada and New Zealand, who were participating in the events surrounding Operation London Bridge
September 17th - The Prince and Princess of Wales attended a luncheon given by the King and Queen at Buckingham Palace for Governors-General
September 18th - The Princess of Wales received Olena Zelenska, the wife of the President of Ukraine. Later, the Prince and Princess of Wales attended a reception given by the King and Queen at Buckingham Palace for Heads of State and Official Overseas Guests
September 19th - The Prince and Princess of Wales, Prince George and Princess Charlotte joined members of the royal family, foreign royals, Heads of State, official overseas guests and other family and friends attended the State Funeral of Queen Elizabeth II at Westminster Abbey. The family and gathered guests then travelled to Windsor for the Committal Service for Queen Elizabeth II, which took place in St George’s Chapel
September 22nd - The Prince and Princess of Wales visited Windsor Guildhall to meet personnel involved in the arrangements for the Committal Service for Queen Elizabeth II
September 27th - The Prince and Princess of Wales made their first visit to Wales since becoming the Prince and Princess. They first visited the Royal National Lifeboat Institution, which was the site of their first ever joint visit as an engaged couple and a return to the place where they first lived as husband and wife. Afterwards, the couple met local residents at Holyhead Marina Café and Bar. Finally, the Prince and Princess visited St Thomas Church, in Swansea
September 28th - The Princess of Wales, Patron of the Royal Foundation of The Prince and Princess of Wales, received Amanda Berry
September 29th - The Princess of Wales received Commander Philip Burgess and members of the crew of HMS GLASGOW at Windsor Castle. She later, in her role as Patron of the Royal Foundation of the Prince and Princess of Wales, held an Early Years Meeting
