1977 (MCMLXXVII) ebile ngwaga wa go thoma ka Mokibelo, ngwaga wa boseswai ngwagengsome wa 1970s, ngwaga wa bomasomešupa šupa ngwagengkgolo wa Ngwagakgolo 20, le ngwaga wa bomakgolo senyane masomešupa šupa ngwagengkete wa Ngwagakete 2.