1615 (MDCXV) ebile ngwaga wa go thoma ka Labone, ngwaga wa botshelela ngwagengsome wa 1610s, ngwaga wa bolesome hlano ngwagengkgolo wa Ngwagakgolo 17, le ngwaga wa bomakgolo tshela lesome hlano ngwagengkete wa Ngwagakete 2.