SIGNIFICANT dates in the life of Pope John XXIII; 1881, November 25: Born as Angelo Giuseppe Roncalli in Sotto il Monte in the Provinee and Diocese of Bergamo. The third of 13 children of Giovanni and Maria Anna Roncalli, and their first son.
1892: Entered Minor Seminary at Bergamo.
1898: Received Minor Orders. 1900: Began Theological Studies at Cerasola College in Rome. 1901: Studies interrupted by one year of military service. 1904, August 10: Ordained in the church of Santa Maria in Monte Santo, Rome.
1905-1914: Served as Private Secretary to Bishop Giacomo Radini-Tedescho of Bergamo and as Professor of Church History, apologetics and petrology at the Bergamo Seminary.
1915: Recalled to military service as a private in the medical corps of the Italian Army. Promoted to sergeant-major and then to a chaplaincy with the rank of lieutenant.
1918-1920: Returned to teaching at the Bergamo seminary. 1921. May 7: Named monsignor (domestic prelate) by Pope Benedict XV, and president of the Italian Society for the Propagation of the Faith.
1925: Organised the Mission Exhibit in Rome for the 1925 Holy Year
1925, March • 19: Consecrated as Titular Bishop of Areopolis with the personal title of archbishop and namecio Apostolic Visitor to Bulgaria.
1931, October 16: Appointed first Apostolic Delegate to Bulgaria.
1934, November 21: Named Apostolic Delegate to Greece and Turkey and appointed Apostolic Administrator of the Latin Rite Vicariate Apostolic of Constantinople.
1944, December 22: Appointed by Pius XII as Apostolic Nuncio to France.
1951, June: Named by Pius X11 as the Holy See's first permanent observer at the United Nations Educational, Scientific and Cultural Organisation (UNESCO).
1952, November 29: Named by Pius XII to Sacred College of Cardinals.
1953. January 15: Appointed as Patriarch of Venice.
1954, October: Served as Papal Legate to the Marian Year Congress at Beirut, Lebanon.
1958, March 25: Went to Lourdes on the 100th anniversary of the apparitions of Our Lady to St. Bernadette, to consecrate the underground Basilica of St. Pius X.
1958, October 25: Entered the 78th conclave to elect a pope.
1958, October 28: Elected as Pope.
Took name of John XXIII. 1958, November 4: Crowned Pope in St. Peter's Basilica.
1958, December 15: Created 21 new Cardinals, including the late Cardinal Godfrey, Archbishop of Westminster, and named two more in petto.
1959, January 26: Announced his intention to summon an Ecumenical Council.
1959, April 12: Canonises SS. Charles of Sezze and Joaquina de Vedruna de Mas.
1959, June 29: Issued his first Encyclical Ad Petri Cathedram. (Near the chair of Peter).
1959, August 1: Issued his second Encyclical, Sacerdotti Nostri Pritnordia. (From the beginning of our priesthood).
1959, September 26: Issued his third Encyclical, Grata Tiecordatio (Grateful memory).
1959. October 11: Presided at Centenary Celebrations of North American College in Rome.
1959, November 28: Issued his fourth Encyclical. Princeps Pasforum. (The Prince of Shepherds).
1959, December 14: Named eight new Cardinals.
1960, March 28: Named seven new Cardinals, bringing Sacred College to record total of 85 members.
1960, May 8: Consecrated 14 missionary bishops in St. Peter's Basilicia.
1960, May 27: Canonised Gregory Barbarigo.
1960, June 12: Canonised John de Ribera.
1961, January 16: Named four new Cardinals.
1961, May 11: Canonised Bertilla Boscardin, 1961, July 14: Issued fifth Encyclical, Mater et magistra. (Mother and Teacher).
1961, September 29: Issued Apostolic Letter on the Rosary.
1961, November 11: Issued his sixth Encyclical Aeterna Del Sapientia. (The Eternal Wisdom of God).
1962, March 19: Named 10 new Cardinals, bringing the College of Cardinals to a new record of 87 members.
1962, May 2: Canonised Martin de Posses, Nego Dominican Brother.
1962: July 1: Issued his seventh Encyclical. Paenitentiam Agere. (Practise of Penace by the World).
1962, October 11: Opened the Second Vatican Council in Rome.
1962, November: Pope John announces that the name of St. Joseph is to be included in the Canon of the Mass immediately after that of Our Lady, This will go into effect on December 8.
1962, November 25: Pope John cancels all audiences owing to illness described as influenza.
1962, November 27: Pope John alters date for second session of Vatican Council from May 12 to September 5, 1963.
1962, December 7: The Pope closes the first session of the Council.
1962, December 9: Canonises Peter Eymard, Antonio Pucci and Francisco Maria de Cornperosa.
1962, December 16: Pope John gives first private audience since onset of illness.
1962, December 22: Pope John broadcasts his Christmas message to the world. One of the most joyous and conficknt Christmas messages ever delivered by a Pope.
1963, January 20: Pope John canonises Vincent Pallotti.
1963, February 10: Pope John greets Archbishop Slipyj on his release after 18 years in Russian labour camps.