13 Jenụwarị bu ubochi nke 13th (nke iri na atọ) na onwa ana kpo Jenụwarị. Na Gregorian calender, 13 Jenụwarị bu ubochi nke 13th na afo. Anyi nwere agugu ubochi 352 (353 na afo nke ana-kpo leap-year) du mgbe afo na agwu.