| 112141 | September 30 | Death | 2013 – Janet Powell, Australian educator and politician (b. 1942) |
| 112142 | September 30 | Death | 2013 – Ramblin' Tommy Scott, American singer and guitarist (b. 1917) |
| 112143 | September 30 | Death | 2013 – Rangel Valchanov, Bulgarian actor, director, and screenwriter (b. 1928) |
| 112144 | September 30 | Death | 2014 – Molvi Iftikhar Hussain Ansari, Indian cleric and politician (b. 1940) |
| 112145 | September 30 | Death | 2014 – Ralph Cosham, English-American actor (b. 1936) |
| 112146 | September 30 | Death | 2014 – Iemasa Kayumi, Japanese voice actor (b. 1933) |
| 112147 | September 30 | Death | 2014 – Jerrie Mock, American pilot (b. 1925) |
| 112148 | September 30 | Death | 2014 – Martin Lewis Perl, American physicist and engineer, Nobel Prize laureate (b. 1927) |
| 112149 | September 30 | Death | 2015 – Guido Altarelli, Italian-Swiss physicist and academic (b. 1941) |
| 112150 | September 30 | Death | 2015 – Caio César, Brazilian actor and police officer (b. 1988) |
| 112151 | September 30 | Death | 2015 – Claude Dauphin, French businessman (b. 1951) |
| 112152 | September 30 | Death | 2015 – Kelly Gissendaner, American murderer (b. 1968) |
| 112153 | September 30 | Death | 2015 – Göran Hägg, Swedish author and critic (b. 1947) |
| 112154 | September 30 | Holiday and observance | Agricultural Reform (Nationalization) Day (São Tomé and Príncipe) |
| 112155 | September 30 | Holiday and observance | Birth of Morelos (Mexico) |
| 112156 | September 30 | Holiday and observance | Blasphemy Day (United States, Canada, other countries) |
| 112157 | September 30 | Holiday and observance | Christian feast day:Gregory the IlluminatorHonorius of CanterburyJeromeSeptember 30 (Eastern Orthodox liturgics) |
| 112158 | September 30 | Holiday and observance | Independence Day (Botswana) or Botswana Day, celebrates the independence of Botswana from United Kingdom in 1966. |
| 112159 | September 30 | Holiday and observance | International Translation Day (International Federation of Translators) |
| 112160 | September 30 | Holiday and observance | Recovery Day (Canada) |
| 112161 | October 1 | Event | 331 BC – Alexander the Great defeats Darius III of Persia in the Battle of Gaugamela. |
| 112162 | October 1 | Event | 959 – Edgar the Peaceful becomes king of all England. |
| 112163 | October 1 | Event | 1553 – Coronation of Queen Mary I of England. |
| 112164 | October 1 | Event | 1787 – Russians under Alexander Suvorov defeat the Turks at Kinburn. |
| 112165 | October 1 | Event | 1791 – First session of the French Legislative Assembly. |
| 112166 | October 1 | Event | 1795 – Belgium is conquered by France. |
| 112167 | October 1 | Event | 1800 – Spain cedes Louisiana to France via the Treaty of San Ildefonso. |
| 112168 | October 1 | Event | 1811 – The first steamboat to sail the Mississippi River arrives in New Orleans. |
| 112169 | October 1 | Event | 1814 – Opening of the Congress of Vienna, intended to redraw Europe's political map after the defeat of Napoleon the previous spring. |
| 112170 | October 1 | Event | 1827 – Russo-Persian War: The Russian army under Ivan Paskevich storms Yerevan, ending a millennium of Muslim domination in Armenia. |