| 58891 | May.22 | Death | 2012 – John Moores, Jr., English businessman and academic (b. 1928) |
| 58892 | May.22 | Death | 2013 – Bill Austin, American football player and coach (b. 1928) |
| 58893 | May.22 | Death | 2013 – Mick McManus, English wrestler (b. 1920) |
| 58894 | May.22 | Death | 2013 – Lee Rigby, English soldier and drummer (b. 1987) |
| 58895 | May.22 | Death | 2013 – Sigurd Ottovich Schmidt, Russian historian and ethnographer (b. 1922) |
| 58896 | May.22 | Death | 2013 – Ibragim Todashev, Russian-American mixed martial artist (b. 1985) |
| 58897 | May.22 | Death | 2014 – Sergio Bustamante, Mexican actor (b. 1934) |
| 58898 | May.22 | Death | 2014 – Matthew Cowles, American actor and playwright (b. 1944) |
| 58899 | May.22 | Death | 2014 – Imre Gedővári, Hungarian fencer (b. 1951) |
| 58900 | May.22 | Death | 2014 – Dragoljub Velimirović, Serbian chess player (b. 1942) |
| 58901 | May.22 | Death | 2015 – Marques Haynes, American basketball player and coach (b. 1926) |
| 58902 | May.22 | Death | 2015 – Vladimir Katriuk, Ukrainian-Canadian SS officer (b. 1921) |
| 58903 | May.22 | Death | 2015 – John Mosley, American football player and coach (b. 1921) |
| 58904 | May.22 | Death | 2015 – Aminah Robinson, American sculptor and illustrator (b. 1940) |
| 58905 | May.22 | Holiday and observance | Abolition Day (Martinique) |
| 58906 | May.22 | Holiday and observance | Christian feast day:Castus and EmiliusFulkHumilitaMichael Hồ Đình Hy (one of Vietnamese Martyrs)QuiteriaRita of CasciaRomanus of SubiacoMay 22 (Eastern Orthodox liturgics) |
| 58907 | May.22 | Holiday and observance | Harvey Milk Day (California) |
| 58908 | May.22 | Holiday and observance | International Day for Biological Diversity (International) |
| 58909 | May.22 | Holiday and observance | National Maritime Day (United States) |
| 58910 | May.22 | Holiday and observance | National Sovereignty Day (Haiti) |
| 58911 | May.22 | Holiday and observance | Republic Day (Sri Lanka) |
| 58912 | May.22 | Holiday and observance | Translation of the Relics of Saint Nicholas from Myra to Bari (Ukraine) |
| 58913 | May.22 | Holiday and observance | Unity Day, celebrates the unification of North and South Yemen into the Republic of Yemen in 1990. |
| 58914 | May.22 | Holiday and observance | World Goth Day |
| 58915 | May.23 | Event | 844 – Battle of Clavijo: The Apostle Saint James the Greater is said to have miraculously appeared to a force of outnumbered Asturians and aided them against the forces of the Emir of Cordoba. |
| 58916 | May.23 | Event | 1430 – Siege of Compiègne: Joan of Arc is captured by the Burgundians while leading an army to relieve Compiègne. |
| 58917 | May.23 | Event | 1498 – Girolamo Savonarola is burned at the stake in Florence, Italy. |
| 58918 | May.23 | Event | 1533 – The marriage of King Henry VIII to Catherine of Aragon is declared null and void. |
| 58919 | May.23 | Event | 1568 – The Netherlands declare their independence from Spain. |
| 58920 | May.23 | Event | 1568 – Dutch rebels led by Louis of Nassau, defeat Jean de Ligne, Duke of Arenberg, and his loyalist troops in the Battle of Heiligerlee, opening the Eighty Years' War. |