Daylight Saving Time 2014: When Does It Begin? And Why?
Why we "spring forward," and arguments for and against daylight saving time.
Clock confusion will occur again this weekend when daylight saving time (also called daylight savings time) gets under way in the United States.
Twice each year this controversial practice gives rise to various questions: Why do we spring forward and fall back? Does daylight saving time (DST) really save energy? Is it bad for your health? There is no consensus, but experts do offer some answers.
But first, the details.
Daylight saving time 2014 will begin at 2 a.m. on Sunday, March 9, when most U.S. states will spring forward an hour. Time will fall back to standard time again on Sunday, November 2, when DST ends. (See National Geographic's pictures of spring landscapes.)
But the federal government doesn't require U.S. states
