1639 (MDCXXXIX) ebile ngwaga wa go thoma ka Mokibelo, ngwaga wa bolesome ngwagengsome wa 1630s, ngwaga wa bomasometharo senyane ngwagengkgolo wa Ngwagakgolo 17, le ngwaga wa bomakgolo tshela masometharo senyane ngwagengkete wa Ngwagakete 2.