440s
440s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 440 ya fela ka 31 Manthole 449. Ngwagasome 440s o wela ngwagengkgolo wa 5.
| Ngwagakete: | Ngwagakete 1 |
| Mengwagakgolo: | Ngwagakgolo 4 – Ngwagakgolo 5 – Ngwagakgolo 6 |
| Mengwagasome: | 410s 420s 430s – 440s – 450s 460s 470s |
| Mengwaga: | 440 441 442 443 444 445 446 447 448 449 |
| 440s-tšago tswalanya: |