19g - 20g - 21g 1920au 1930au 1940au 1950au 1960au - 1970au - 1980au 1990au 2000au 2010au 2020au 1973 1974 1975 1976 1977 - 1978 - 1979 1980 1981 1982 1983
Chwefror
Mawrth Ebrill
Mai
Mehefin
Gorffennaf Awst
Medi
Hydref
Tachwedd Rhagfyr
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