Pool in evening light

It's getting dark so early now.

I don't think it will be helped next week when we fall back for daylight savings. What is the rational for that these days? It's dark when I go to work, and dark soon after. What does changing the clock really change? When did we start tinkering with this? Is it the same in France? I'm too tired to look it up.
Meanwhile the purple skies are due to the lights of the city, the low clouds, and my weary eyesight.