Get ready to spring forward - and move your clocks ahead one hour - this weekend.
Daylight Saving Time arrives this weekend, requiring people to move their clocks ahead one hour before they go to bed on March 11 (or at 2 a.m. Sunday, March 12.) The time change shift moves more daylight into the evening hours.
The idea of DST traces its roots back to Benjamin Franklin who was trying to figure out a way to use fewer candles. The actual time change practice was first used in World War I in an effort to conserve energy (longer daylight hours means less fuel burned for lamps.)
DST was reintroduced during World War II and reinstated in the U.S. in 1942. In 1966, Congress passed the time act unifying the practice across the U.S. but allowing states to opt out by local ordinance. The dates of Daylight Saving Time were altered several times in the U.S. until the current ones were set in 2007.
The name is Daylight Saving Time - not Daylight Saving's Time or Daylight Savings Times.
More than 70 countries and one-fifth of the world's 7 billion people follow DST
Arizona and Hawaii don't observe DST. Neither do China, India or Japan.
Some studies suggest the loss of an hour of sleep as we move the clocks forward results in health problems, an increase in auto and workplace accidents and increased appetites. Studies also show workers are less productive on the Monday after the time change.
This year's DST switch comes eight days ahead of the spring equinox on March 20 at 6:29 a.m. ET.
Clocks will change back on Sunday, Nov. 5, 2017
Daylight Saving Time is a good time to check - and if needed change - the batteries in your smoke detectors around the house.