263 (CCLXIII) ebile ngwaga wa go thoma ka Labone, ngwaga wa bone ngwagengsome wa 260s, ngwaga wa bomasometshela tharo ngwagengkgolo wa Ngwagakgolo 3, le ngwaga wa bomakgolo pedi masometshela tharo ngwagengkete wa Ngwagakete 1.