520s
520s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 520 ya fela ka 31 Manthole 529. Ngwagasome 520s o wela ngwagengkgolo wa 6.
| Ngwagakete: | Ngwagakete 1 |
| Mengwagakgolo: | Ngwagakgolo 5 – Ngwagakgolo 6 – Ngwagakgolo 7 |
| Mengwagasome: | 490s 500s 510s – 520s – 530s 540s 550s |
| Mengwaga: | 520 521 522 523 524 525 526 527 528 529 |
| 520s-tšago tswalanya: |