277 (CCLXXVII) ebile ngwaga wa go thoma ka Mošupologo, ngwaga wa boseswai ngwagengsome wa 270s, ngwaga wa bomasomešupa šupa ngwagengkgolo wa Ngwagakgolo 3, le ngwaga wa bomakgolo pedi masomešupa šupa ngwagengkete wa Ngwagakete 1.