when daylight savings time begins
1 In 2015 Daylight Savings Time begins Sunday March 8, 2015 at 2:00 a.m. local time. 2  Clocks will shift forward 1 hour, making the local time 3:00 a.m. 3  When Daylight Savings Time (DST) begins in the Northern Hemisphere, it is ending in the Southern Hemisphere. 4  Benjamin Franklin first proposed the idea of DST in 1784.