1240s
1240s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 1240 ya fela ka 31 Manthole 1249. Ngwagasome 1240s o wela ngwagengkgolo wa 13.
| Ngwagakete: | Ngwagakete 2 |
| Mengwagakgolo: | Ngwagakgolo 12 – Ngwagakgolo 13 – Ngwagakgolo 14 |
| Mengwagasome: | 1210s 1220s 1230s – 1240s – 1250s 1260s 1270s |
| Mengwaga: | 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 |
| 1240s-tšago tswalanya: |