420
| Ngwagakete: | Ngwagakete 1 |
|---|---|
| Mengwagakgolo: | Ngwagakgolo 4 – Ngwagakgolo 5 – Ngwagakgolo 6 |
| Mengwagasome: | 390s 400s 410s – 420s – 430s 440s 450s |
| Mengwaga: | 417 418 419 – 420 – 421 422 423 |
420 (CDXX) ebile ngwagamolele wa go thoma ka Laboraro, ngwaga wa pele ngwagengsome wa 420s, ngwaga wa bomasomepedi ngwagengkgolo wa Ngwagakgolo 5, le ngwaga wa bomakgolo nne masomepedi ngwagengkete wa Ngwagakete 1.