Same goes for the clock in my fla.
I'm in the UK and I keep my PCs on GMT (or UTC) all year round - I can't see any point in fooling yourself that it's an hour later than it really is. I adjust times on the fly for work and social purposes. One of my PCs runs a weather station and if that automatically changed time then I'd end up with duplicate or lost observations - not good.
This far north you're always going to have a lack of daylight in winter and too much of it in summer, tinkering with clocks won't change that (in London daylight ranges from just under 8 hours in late December to just over 16 hours in late June, but even at midnight GMT at this time of year there's a faint glow on the northern horizon on a clear night).
Side note: I always used to suffer from a lack of sleep in the summer. Once I stuck to UTC it stopped all that and I now sleep soundly year-round. Of course, as far as everyone else is concerned I'm just going to bed an hour later and getting up an hour later in summer...