In December 2021, the Welsh Government published the first wave of Wales’s national milestones, with the second wave set in November 2022.
Ym mis Rhagfyr 2021, cyhoeddodd Llywodraeth Cymru y don gyntaf o gerrig milltir cenedlaethol Cymru, a gosodwyd yr ail don ym mis Tachwedd 2022.