This Sunday, October 20 is World Mission Sunday. The 2nd Collection/Share Collection is replaced by the collection for the Pontifical Missions Society at Masses this weekend. World Mission Sunday is the Holy Father’s annual appeal for spiritual and financial support so that the life-giving work of overseas mission and missionaries can continue. It always falls on the second last Sunday in October, and like the Good Friday collection for the Holy Land and Peter’s Pence, it is one of three yearly universal Church collections.
Further information can be found at https://missio.ie/what-is-world-mission-sunday/.