Ngwagakete: Ngwagakete 1
Mengwagakgolo: Ngwagakgolo 6Ngwagakgolo 7Ngwagakgolo 8
Mengwagasome: 600s  610s  620s  – 630s –  640s  650s  660s
Mengwaga: 635 636 637638639 640 641

638 (DCXXXVIII) ebile ngwaga wa go thoma ka Mošupologo, ngwaga wa bosenyane ngwagengsome wa 630s, ngwaga wa bomasometharo seswai ngwagengkgolo wa Ngwagakgolo 7, le ngwaga wa bomakgolo tshela masometharo seswai ngwagengkete wa Ngwagakete 1.