Even Scharning said:
And the State of the Union 2018 subpage on Seasonal Clock Changes: https://ec.europa.eu/commission/priorities/state-union-speeches/state-union-...
Aha! That contains a draft Directive which is clear. * The present system applies to the 2018-10-28 transition to winter time and the 2019-03-31 transition to summer time. * The 2019-10-27 transition to winter time is optional; member states must announce by 2019-03-31 whether or not they will make it. * After that, no seasonal changes are permitted. * Member states can make one-off changes to a different UTC offset but must give at least 6 months notice and can't change their mind during the 6 month window (but can before that). (I suppose a state could give notice of one-off changes every 6 months, but I think that would be seen as a violation of the "no seasonal changes" rule, which takes precedence.) -- Clive D.W. Feather | If you lie to the compiler, Email: clive@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646