| 41131 | April 9 | Death | 2013 – Emilio Pericoli, Italian singer (b. 1928) |
| 41132 | April 9 | Death | 2013 – McCandlish Phillips, American journalist and author (b. 1927) |
| 41133 | April 9 | Death | 2013 – Paolo Soleri, Italian-American architect, designed the Cosanti (b. 1919) |
| 41134 | April 9 | Death | 2013 – Zao Wou-Ki, Chinese-French painter (b. 1920) |
| 41135 | April 9 | Death | 2014 – Gil Askey, American trumpet player, composer, and producer (b. 1925) |
| 41136 | April 9 | Death | 2014 – Chris Banks, American football player (b. 1973) |
| 41137 | April 9 | Death | 2014 – Rory Ellinger, American lawyer and politician (b. 1941) |
| 41138 | April 9 | Death | 2014 – Norman Girvan, Jamaican economist, academic, and politician (b. 1941) |
| 41139 | April 9 | Death | 2014 – Aelay Narendra, Indian politician (b. 1946) |
| 41140 | April 9 | Death | 2014 – A. N. R. Robinson, Trinbagonian politician, 3rd President of Trinidad and Tobago (b. 1926) |
| 41141 | April 9 | Death | 2014 – Svetlana Velmar-Janković, Serbian author (b. 1933) |
| 41142 | April 9 | Death | 2015 – Paul Almond, Canadian-American director, producer, and screenwriter (b. 1931) |
| 41143 | April 9 | Death | 2015 – Nina Companeez, French director and screenwriter (b. 1937) |
| 41144 | April 9 | Death | 2015 – Alexander Dalgarno, English physicist and academic (b. 1928) |
| 41145 | April 9 | Death | 2015 – Ivan Doig, American journalist and author (b. 1939) |
| 41146 | April 9 | Death | 2015 – Tsien Tsuen-hsuin, Chinese-American sinologist and academic (b. 1909) |
| 41147 | April 9 | Holiday and observance | Bagdad Liberation Day (Iraqi Kurdistan) |
| 41148 | April 9 | Holiday and observance | Bataan Day or Araw ng Kagitingan (Philippines) |
| 41149 | April 9 | Holiday and observance | Christian feast day:Dietrich Bonhoeffer (Anglicanism, Lutheranism)GaucheriusMaterianaWaltrudeApril 9 (Eastern Orthodox liturgics) |
| 41150 | April 9 | Holiday and observance | Constitution Day (Kosovo) |
| 41151 | April 9 | Holiday and observance | Day of National Unity (Georgia) |
| 41152 | April 9 | Holiday and observance | Day of the Finnish Language (Finland) |
| 41153 | April 9 | Holiday and observance | Martyr's Day (Tunisia) |
| 41154 | April 9 | Holiday and observance | Occupation of Denmark (Denmark) |
| 41155 | April 9 | Holiday and observance | Vimy Ridge Day (Canada) |
| 41156 | April 10 | Event | 428 – Nestorius becomes the Patriarch of Constantinople. |
| 41157 | April 10 | Event | 837 – Halley's Comet makes its closest approach to Earth at a distance equal to 0.0342 AU (5.1 million kilometres/3.2 million miles). |
| 41158 | April 10 | Event | 879 – Louis III and Carloman II become Kings of the Western Franks. |
| 41159 | April 10 | Event | 1407 – The lama Deshin Shekpa visits the Ming Dynasty capital at Nanjing. He is awarded the title "Great Treasure Prince of Dharma". |
| 41160 | April 10 | Event | 1500 – Ludovico Sforza is captured by Swiss troops at Novara and is handed over to the French. |