At 12 pm local time, Pope Leo XIV will lead an ecumenical prayer service for the care of creation in the Sistine Chapel. Afterwards, a meeting will take place in the Sala Regia with individuals and organisations dedicated to environmental protection. Later in the afternoon, at 2:45 pm, the King and Queen will visit the Basilica of Saint Paul Outside the Walls, where King Charles will be formally granted the title Royal Confrater of Saint Paul.

Buckingham Palace has described the visit as “historic,” aligning with the Jubilee Year theme Pilgrims of Hope, and recognising the shared ecumenical efforts between the Catholic Church and the Church of England.