At 2 a.m. local time on Sunday morning, March 8 (2015-03-08), clocks will “spring forward” one hour (except for Arizona & Hawaii*)
It’s a good time to check the batteries in your smoke alarms, computer keyboards, computer mouse/mouses/mices, etc.
*Why not Arizona & Hawaii? Arizona is one of the warmest locations in the summer. Increasing daylight hours would increase energy use from air conditioners and cooling systems. As for Hawaii, it is closer to the equator and does not see a large variation in daylight hours between winter and summer