If you are in the UK did you remember to turn your clocks forward an hour last night? We lose an hour but get this back in the autumn when we go back to GMT. At least we get an extra hour of light in the evenings, which is good.
I not sure when BST first started (WW2?), but it is good idea. There was even thought of adopting BST all year around. I think clocks are also advanced in some European countries too, but I'm not sure if they move at the same date.