Daylight savings
Daylight savings: Why we turn our clocks forward and back every year Twice a year, most of the United States changes its clocks by an hour. The tradition of Daylight Saving Time is said to have begun as a way to save coal during World War I, but its impact on society and the economy is still debated. Some argue that it saves energy and reduces traffic accidents, while others say the shift disrupts sleep patterns and has little effect on overall energy consumption. Regardless of the debate, Daylight Saving Time remains a fixture in many parts of the world.