Some things always seem to signal the change from winter to spring. The first crocus. The sound of birds chirping. Turning the clocks ahead an hour. On Sunday, March 12, at 2 a.m., people in most areas of the U.S. will turn their clocks ahead one hour to daylight-saving (not “savings”) time. You may have already noticed that it’s staying lighter later, thanks to the normal course of the Earth’s movements in relation to the sun, but daylight-saving time turbocharges this process.