Ngwagakete: Ngwagakete 2
Mengwagakgolo: Ngwagakgolo 19Ngwagakgolo 20Ngwagakgolo 21
Mengwagasome: 1900s  1910s  1920s  – 1930s –  1940s  1950s  1960s
Mengwaga: 1936 1937 193819391940 1941 1942

1939 (MCMXXXIX) ebile ngwaga wa go thoma ka Sontaga, ngwaga wa bolesome ngwagengsome wa 1930s, ngwaga wa bomasometharo senyane ngwagengkgolo wa Ngwagakgolo 20, le ngwaga wa bomakgolo senyane masometharo senyane ngwagengkete wa Ngwagakete 2.