Yuqing Liu/Business Insider Daylight-saving time ends on Sunday, November 1 at 2 a.m. in the US. Clocks will move back one hour. In the US, the policy started in the early 1900s as a way to cut energy use. But many Americans think it's no longer worth the hassle, and some states are trying to do away with the practice. Research suggests changing the clocks can increase health risks and accidents in the days after daylight-saving time starts. Visit Business Insider's homepage for more stories. On Sunday, November 1 at 2:00 a.m., most clocks in North America will turn back one hour.But many people in the US want to be done with this clock-changing ritual for good.