MAY 2019
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| 1 | Feast of St Joseph, the worker |
 | International Workers' Day |
 | National Day of Prayer in the USA |
 | Anniversary of the Beginning of the Catholic Worker Movement |
| 3 | Feasts of Sts. Philip and James, Apostles |
| 4 | Anniversary of the Kent State Massacre |
 | First Freedom Ride |
| 5 | Celebration of Cinco de Mayo |
| 8 | World Red Cross and Red Crescent Day |
| 12 | Mothers' Day |
| 14 | Feast of St. Matthias, Apostle |
 | World Day for Cultural Diversity for Dialogue and Development |
| 20 | Birthday of Franz Jägerstätter in 1907-1943. He was a martyr for the faith, a conscientious objector, a husband and father of three. He was executed for his refusal to fight for Hitler. |
| 21 | Feast of the Ascension of the Lord |
| 22 | International Day for Biological Diversity |
 | Birthday of Betty Williams, a co-recipient with Mairead Corrigan Maguire of the Nobel Peace Prize in 1976 for her work as a co-founder of the Community of Peace People, an organization dedicated to promoting a peaceful resolution to the troubles in Northern Ireland. |
| 24 | Global Day of Prayer for the Catholic Church in China |
 | Promulgation of Laudato SI: On Care for our Common Home |
| 25 | Africa Day |
| 27 | Memorial Day |
| 30 | Feast of the Ascension of the Lord (moved from Thursday in some Dioceses) |
 | Feat of St. Joan of Arc |
| 31 | Feast of the Visitation of Mary to her cousin, Elizabeth |
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