Well not in todays connected world.
> For Continental trains only will special time tables be required, one for April, a second for May, June, July and August, and a third for September
Yep, more like it.
I think DST today is less relevant. Light is cheap. I dont actually need candles. Cities and towns also have lights. Today most power is being used by manufacuring, be it at day or at night. I dont think savings is relevant here.
Dont get me wrong - I love daylight. But I enjoy that we @ europe will get rid of DST. I just hope we get to stay in summer time :)