https://en.m.wikipedia.org/wiki/Summer_time_in_Europe
European Union Directive 2000/84/EC makes the observance of summer time mandatory for EU member states (except overseas territories), though a proposal to repeal this directive and require that member states observe their own choice[note 1] year-round is currently going through the legislative process as of July 2020, but
has not seen progress since October 2020.[1]