https://www.bbc.com/news/world-europe-46017347

"If we aim to do this in 2019, as the [European] Commission suggested, this will not be supported by the majority of member states," said Austrian Transport Minister Norbert Hofer, who hosted his 27 EU counterparts in Graz.

Allowing until 2021 would help ensure the EU's three existing time zones did not become a more complicated patchwork, Mr Hofer said.