| Tymor | Tymor yn Cychwyn | Hanner Tymor | Tymor yn Gorffen |
| Hydref 2024 | Dydd Mawrth 3ydd o Fedi | Dydd Llun 28ain o Hydref – Dydd Gwener 1af o Dachwedd | Dydd Gwener 20fed o Ragfyr |
| Gwanwyn 2025 | Dydd Llun 6ed o Ionawr | Dydd Llun 24ain o Chwefror – Dydd Gwener 28ain o Chwefror | Dydd Gwener 11eg o Ebrill |
| Haf 2025 | Dydd Llun 28ain o Ebrill | Dydd Llun 26ain o Fai – Dydd Gwener 30ain o Fai | Dydd Gwener 20fed o Orffennaf |
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