Calendr
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May 2026
| M | T | W | T | F | S | S |
| 1 | 2 | 3 | ||||
| 4 Gwyl y Banc (dim ysgol) | 5 Arholiadau bl 9 | 6 Arholiadau bl 9 | 7 Dechrau arholiadau TGAU ac UG / Uwch | 8 | 9 | 10 |
| 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| 18 | 19 | 20 | 21 | 22 Diwrnod olaf yr hanner tymor | 23 | 24 |
| 25 | 26 | 27 | 28 | 29 | 30 | 31 |