Old Ben Franklin, ambassador to France during the American revolution, peered out his window early one morning and took in the Paris sun light. "Why are we not taking advantage of all this daylight?" he is supposed to have said. The philosopher and scientist then picked up his quill pen and scratched out a study that showed the immense number of candles that Paris would save if it changed its clocks to gain extra daylight in the summer. With these scratches, Franklin reputedly first outlined the idea that led to the 20th-century daylight saving time system that brings confusion and controversy to America every year. Millions of Americans in 15 states switched from daylight time back to standard Saturday. To some, the time-switching means little, except the twice-annual struggle to remember to juggle their clocks. But others are hotly concerned over the time-switching, and are demanding an end to it. They do battle with the defenders of daylight saving time...