Comment by banksecopsguy

My second question: Why do countries prefer to use DST when they could achieve the same effect by changing the work timings, school timings, etc. That is say, the work timings are 9 AM - 5 PM. Instead of applying DST in summer, they could instead change the work timings to 8 AM - 4 PM. Why is this not preferred? Isn't it simpler to keep the clock constant and the work timings variable than keeping the work timings constant and the clock variable? Personally, I think it is simpler for me to understand changes in work timings than changes in DST. Several times, I have had to perform mental gymnastics to figure out which way the clock moved and how it affects my schedule, i.e. whether I need to be sleeping an hour earlier than usual or an hour later than usual.