639

Gotšwa go Wikipedia
Ngwagakete: Ngwagakete 1
Mengwagakgolo: Ngwagakgolo 6Ngwagakgolo 7Ngwagakgolo 8
Mengwagasome: 600s  610s  620s  – 630s –  640s  650s  660s
Mengwaga: 636 637 638639640 641 642

639 (DCXXXIX) ebile ngwaga wa go thoma ka Labobedi, ngwaga wa bolesome ngwagengsome wa 630s, ngwaga wa bomasometharo senyane ngwagengkgolo wa Ngwagakgolo 7, le ngwaga wa bomakgolo tshela masometharo senyane ngwagengkete wa Ngwagakete 1.