28 Jenụwarị bu ubochi nke 28th (nke iri abụọ na asatọ) na onwa ana kpo Jenụwarị. Na Gregorian calender, 28 Jenụwarị bu ubochi nke 28th na afo. Anyi nwere agugu ubochi 337 (338 na afo nke ana-kpo leap-year) du mgbe afo na agwu.