Most people in the United States will get an extra hour of sleep Saturday night, thanks to the annual shift back to standard time. Officially, the change comes at 2 a.m. Sunday, but most people set their clocks back before heading to bed Saturday night. Read more http://www.bostonglobe.com/news/nat...er-approach/TY8Pz5VKgdYL5qm67eiGkK/story.html