30s
30s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 30 ya fela ka 31 Manthole 39. Ngwagasome 30s o wela ngwagengkgolo wa 1.
| Ngwagakete: | Ngwagakete 1 |
| Mengwagakgolo: | Ngwagakgolo 1 BC – Ngwagakgolo 1 – Ngwagakgolo 2 |
| Mengwagasome: | 0s 10s 20s – 30s – 40s 50s 60s |
| Mengwaga: | 30 31 32 33 34 35 36 37 38 39 |
| 30s-tšago tswalanya: |