1999
- November-December / Tachwedd-Rhagfyr
- March-April / Mawrth-Ebrill
- February-March / Chwefror-Mawrth
- January-February / Ionawr-Chwefror
1998
- December – January/ Rhagfyr – Ionawr
- November-December / Tachwedd-Rhagfyr
- October-November / Hydref-Tachwedd
- September-October / Medi-Hydref
- June-July / Mehefin/Gorffenaf
- May-June / Mai-Mehefin
- March-April / Mawrth-Ebrill
- February-March / Chwefror-Mawrth
1997
- December – January / Tachwedd – Ionawr
- November – December/ Tachwedd – Rhagfyr
- October-November / Hydref-Tachwedd
- September-October / Medi-Hydref
- June-July / Mehefin/Gorffenaf
- April / Ebrill
1996
- December / Rhagfyr
- November-December / Tachwedd-Rhagfyr
- October-November / Hydref-Tachwedd
- September-October / Medi-Hydref
- June-July / Mehefin/Gorffenaf
- May-June / Mai-Mehefin
- April – May / Ebrill – Mai
- March-April / Mawrth-Ebrill
- February-March / Chwefror-Mawrth
- January-February / Ionawr-Chwefror
1995
- December / Rhagfyr
- November-December / Tachwedd-Rhagfyr
- October-November / Hydref-Tachwedd
- September-October / Medi-Hydref
- June-July / Mehefin/Gorffenaf
- May-June / Mai-Mehefin
- April – May / Ebrill – Mai
- March-April / Mawrth-Ebrill
- February-March / Chwefror-Mawrth
- January-February / Ionawr-Chwefror
1994
- December / Rhagfyr
- November-December / Tachwedd-Rhagfyr
- October-November / Hydref-Tachwedd
- September-October / Medi-Hydref
- June-July / Mehefin/Gorffenaf
- May-June / Mai-Mehefin
- April-May / Ebrill-Mai
- March-April / Mawrth-Ebrill
- February-March / Chwefror-Mawrth
- January-February / Ionawr-Chwefror
1993
- November-December / Tachwedd-Rhagfyr
- October-November / Hydref-Tachwedd
- September-October / Medi-Hydref
- June-July / Mehefin/Gorffenaf
- May-June / Mai-Mehefin
- April-May / Ebrill-Mai
- March-April / Mawrth-Ebrill
- February-March / Chwefror-Mawrth
- January-February / Ionawr-Chwefror
1992
- December / Rhagfyr
- November / Tachwedd
- October / Hydref
- September / Medi
- June / Mehefin
- May / Mai
- April / Ebrill
- March / Mawrth
- February / Chwefror
- January / Ionawr
