• 14 June 1862 - When Giovanni Cagliero was ordained to the priesthood
• 1875 - When Giovanni Cagliero finished teaching at the Salesian House of Studies in Turin
• 1875 - When Giovanni Cagliero led the first ten Salesians to America and established five houses in Uruguay and Argentina
• 1877 - When Giovanni Cagliero finished the establishment of five houses in Uruguay and Argentina
• 20 November 1883 - When Giovanni Cagliero was made Pro-Apostolic Vicar of new vicariate in Northern Patagonia, in Argentina