Then I read this part:
> The practice, which was used as a means to conserve energy during the World Wars as well as the oil crises of the 1970s, became law across the bloc in 1996.
> All EU countries are required to move forward by an hour on the last Sunday of March and back by an hour on the final Sunday in October.
...and my second thought is: "wow, the EU members must give a lot more control to their central government, in the US the states do whatever they want with their timezones and would scoff at that kind of micromanagement."
Now, you're saying that the states actually are substantially constrained by federal regulation and I am much less optimistic than I was about our current mechanisms of government and democracy when it comes to dealing with timezone policy.