| 56311 | May.16 | Death | 2015 – Charlotte Klamroth, German super-centenarian (b. 1903) |
| 56312 | May.16 | Death | 2015 – Moshe Levinger, Israeli rabbi and author (b. 1935) |
| 56313 | May.16 | Death | 2015 – Flora MacNeil, Irish singer (b. 1928) |
| 56314 | May.16 | Death | 2015 – Dean Potter, American rock climber and BASE jumper (b. 1972) |
| 56315 | May.16 | Death | 2015 – Adrian Robinson, American football player (b. 1989) |
| 56316 | May.16 | Holiday and observance | Christian feast day:Aaron (Coptic Church)Abda and Abdjesus, and companions:Abdas of SusaAndrew BobolaBrendan the Navigator (Roman Catholic Church)Caroline Chisholm (Church of England)GermeriusHonoratus of AmiensJohn of NepomukMargaret of CortonaPeregrine |
| 56317 | May.16 | Holiday and observance | Martyrs of Sudan (Episcopal Church (USA)) |
| 56318 | May.16 | Holiday and observance | Mass Graves Day (Iraq) |
| 56319 | May.16 | Holiday and observance | National Day, declared by Salva Kiir Mayardit (South Sudan) |
| 56320 | May.16 | Holiday and observance | Teachers' Day (Malaysia) |
| 56321 | May.17 | Event | 1395 – Battle of Rovine, Wallachians defeat an invading Ottoman army. |
| 56322 | May.17 | Event | 1521 – Edward Stafford, 3rd Duke of Buckingham, is executed for treason. |
| 56323 | May.17 | Event | 1536 – George Boleyn, 2nd Viscount Rochford and four other men are executed for treason. |
| 56324 | May.17 | Event | 1536 – The annulment of Henry VIII and Anne Boleyn’s marriage. |
| 56325 | May.17 | Event | 1590 – Anne of Denmark is crowned Queen of Scotland. |
| 56326 | May.17 | Event | 1642 – Paul Chomedey de Maisonneuve (1612–1676) founds the Ville Marie de Montréal. |
| 56327 | May.17 | Event | 1673 – Louis Jolliet and Jacques Marquette begin exploring the Mississippi River. |
| 56328 | May.17 | Event | 1775 – American Revolutionary War: the Continental Congress bans trade with Quebec. |
| 56329 | May.17 | Event | 1792 – The New York Stock Exchange is formed under the Buttonwood Agreement. |
| 56330 | May.17 | Event | 1805 – Muhammad Ali becomes Wāli of Egypt. |
| 56331 | May.17 | Event | 1808 – Napoleon I of France orders the annexation of the Papal States to the French Empire. |
| 56332 | May.17 | Event | 1814 – Occupation of Monaco changes from French to Austrian. |
| 56333 | May.17 | Event | 1814 – The Constitution of Norway is signed and Crown Prince Christian Frederick of Denmark is elected King of Norway by the Norwegian Constituent Assembly. |
| 56334 | May.17 | Event | 1849 – A large fire nearly burns St. Louis, Missouri to the ground. |
| 56335 | May.17 | Event | 1859 – Members of the Melbourne Football Club codified the first rules of Australian rules football. |
| 56336 | May.17 | Event | 1863 – Rosalía de Castro publishes Cantares Gallegos, the first book in the Galician language. |
| 56337 | May.17 | Event | 1865 – The International Telegraph Union (later the International Telecommunication Union) is established in Paris. |
| 56338 | May.17 | Event | 1869 – Imperial Japanese forces defeat the remnants of the Tokugawa shogunate in the Battle of Hakodate to end the Boshin War. |
| 56339 | May.17 | Event | 1875 – Aristides wins the first Kentucky Derby. |
| 56340 | May.17 | Event | 1900 – Second Boer War: British troops relieve Mafeking. |