San Diego March 9, 2018 12:19 pm The History of Daylight Saving Time Every spring we set our clocks forward an hour, and every fall we set them back, but why? Learn the real story behind Daylight Saving Time. US & World Videos 2:57 Taylor Swift's '22' hat from Eras Tour stop in Paris goes home with San Diego Swiftie 3:26 SDSU softball team heads to NCAA tournament while its superstar leads conversation on mental health 2:51 UC unionized workers authorize strike over protests 3:28 Chula Vista triple jumper trains for 3rd Olympics 1:19 Tuna crabs swarming off San Diego's coast