On May 9, 2025, the Holy See Press Office published the schedule of upcoming celebrations for Pope Leo XIV, including the inaugural Mass on May 18.
Saturday, May 10: Meeting with the cardinals.
Sunday, May 11: At noon, recitation of the Regina Caeli from the central loggia of the basilica.
Monday, May 12: At 10 a.m., meeting with the world press in Paul VI Hall.
Friday, May 16: Audience with the diplomatic corps accredited to the Holy See.
Sunday, May 18: At 10 a.m., Mass inaugurating the pontificate.
Tuesday, May 20: Taking possession of the Papal Basilica of St. Paul Outside the Walls.
Wednesday, May 21: First general audience.
Saturday, May 24: Meeting with the Roman Curia and employees of Vatican City.
Sunday, May 25: At noon, Regina Caeli prayer; taking possession of the Papal Basilica of St. John Lateran (the Pope's cathedral); taking possession of the Papal Basilica of St. Mary Major.
