1840
| Ngwagakete: | Ngwagakete 2 |
|---|---|
| Mengwagakgolo: | Ngwagakgolo 18 – Ngwagakgolo 19 – Ngwagakgolo 20 |
| Mengwagasome: | 1810s 1820s 1830s – 1840s – 1850s 1860s 1870s |
| Mengwaga: | 1837 1838 1839 – 1840 – 1841 1842 1843 |
1840 (MDCCCXL) ebile ngwagamolele wa go thoma ka Laboraro, ngwaga wa pele ngwagengsome wa 1840s, ngwaga wa bomasomenne ngwagengkgolo wa Ngwagakgolo 19, le ngwaga wa bomakgolo seswai masomenne ngwagengkete wa Ngwagakete 2.