Cytunodd y Cyngor y gellid ymestyn y dyddiad tan 31 Hydref 2019, ond y gallai'r DU hefyd ymadael â'r UE yn gynharach na'r dyddiad hwn, pe byddai'n cytuno ar y Cytundeb Ymadael sydd wedi'i negodi eisoes. Fel amod ar gyfer cael estyniad ymhellach na 1 Mehefin 2019, bydd rhaid i'r DU gymryd rhan yn yr etholiadau i Senedd Ewrop. Mae casgliadau'r Cyngor Ewropeaidd i'w gweld yma:https://data.consilium.europa.eu/doc/document/XT-20015-2019-INIT/en/pdf
The Council agreed that the deadline could be extended until 31 October 2019, but also that the UK could leave the EU at an earlier date, should it ratify the Withdrawal Agreement which has been negotiated. A condition of the extension beyond 1 June 2019 is that the UK participates in the elections to the European Parliament. The Conclusions of the European Council can be found here:https://data.consilium.europa.eu/doc/document/XT-20015-2019-INIT/en/pdf