Mae Radio Cymru'n ymuno â'r World Service dros nos. Radio Cymru joins the World Service overnight.
Discover 11,128,835 listings and 274,999 playable programmes from the BBC
Mae Radio Cymru'n ymuno â'r World Service dros nos. Radio Cymru joins the World Service overnight.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
