Daylight Saving Time (DST) is a long-standing practice observed in many countries to make better use of natural daylight during the warmer months. By moving clocks forward one hour in the spring and back one hour in the fall, people can enjoy longer evenings filled with sunlight and potentially reduce electricity consumption. In 2025, Daylight Saving Time in the United States and Canada will begin on Sunday, March 9 , at 2:00 a.m. , when clocks move forward one hour to 3:00 a.m. It will end on Sunday, November 2 , at 2:00 a.m. , when clocks move back one hour to 1:00 a.m. The main idea behind DST is to shift an hour of daylight from the morning, when most people are still asleep, to the evening, when they are more active. This change allows for longer daylight hours after work or school, encouraging outdoor activities, shopping, and tourism. It was first introduced during World War I and again during World War II as a way to conserve fuel and energy. Since then, it has become a ...