INSET DAY / DIWRNOD HMS Posted Medi 20, 2019Medi 23, 2019 gartholwg_admin Calendar When: Medi 27, 2019 @ 08:00 – 16:00 2019-09-27T08:00:00+01:00 2019-09-27T16:00:00+01:00 Inset Day – No school for pupils. Diwrnod HMS- Dim ysgol i ddisgyblion.