One of my current heroes is often touted as the originator of daylight savings. These days, the government says it saves money on electricity. Skeptics argue that the effect is paradoxical and the real reason savings time was instigated was to get people to shop at stores more in the evenings. At 48 degrees north, summer daylight is long at baseline. The sun is early to rise and late to bed. But for a nice take on DST, read this.
To be sure, daylight savings doesn't mean much for me. For example, last night when I looked at the ER wall clock while admitting a patient, I had to pause: "Is it 9:30 AM or PM?"