1020s ke ngwagasome tšhupamabakeng ya Gregorian wa go thoma ka 1 Pherekgong 1020 ya fela ka 31 Manthole 1029. Ngwagasome 1020s o wela ngwagengkgolo wa 11.
| Ngwagakete: | Ngwagakete 2 |
| Mengwagakgolo: | Ngwagakgolo 10 – Ngwagakgolo 11 – Ngwagakgolo 12 |
| Mengwagasome: | 990s 1000s 1010s – 1020s – 1030s 1040s 1050s |
| Mengwaga: | 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 |
| 1020s-tšago tswalanya: |