Bydd y newid i’r cyfnodau rhybudd sydd yn y Rheoliadau’n berthnasol i rybuddion a gyflwynir ar y dyddiad y daw'r Rheoliadau i rym – sef 29 Medi 2020 – neu ar ôl hynny.  Yn yr achos hwn ni ddilynwyd y confensiwn na ddylai Rheoliadau ddod i rym am o leiaf 21 diwrnod ar ôl eu gosod. Mae hyn yn adlewyrchu’r angen brys i ddarparu gwell sicrwydd deiliadaeth yn ystod y cyfnod hwn, gan gyfrannu at y mesurau sydd eisoes ar waith i ymateb i’r feirws.
The alteration to notice periods contained in the Regulations will apply to notices served on or after the date the Regulations come into force – namely 29 September 2020.  The convention that not less than 21 days should elapse between the laying of the Regulations and their coming into force has not been followed in this case. This reflects the urgent need to provide greater security of tenure at this time, thus contributing to the measures already in place in response to the virus.