The Vatican Postal Service issued a set of stamps to commemorate the 150th Anniversary. With the following words on 16 June 2009, Benedict XVI officially marked the beginning of the year dedicated to priests, "…On the forthcoming Solemnity of the Most Sacred Heart of Jesus, Friday 19 June 2009 – a day traditionally devoted to prayer for the sanctification of the clergy –, I have decided to inaugurate a ‘Year of the Priest’ in celebration of the 150th anniversary of the "dies natalis" of John Mary Vianney, the Patron Saint of parish priests worldwide..."