Daylight Saving Time begins at 2 am on Sunday, March 12, 2017 and reverts to standard time on November 5, 2017.
Why do we have daylight savings time anyway? According to the National Geographic, Ben Franklin—of "early to bed and early to rise" fame—was apparently the first person to suggest the concept of daylight saving time, according to computer scientist David Prerau, author of the book Seize the Daylight: The Curious and Contentious Story of Daylight Saving Time.
While serving as U.S. ambassador to France in Paris, Franklin wrote of being awakened at 6 a.m. and realizing, to his surprise, that the sun rose far earlier than he usually did. Imagine the resources that might be saved if he and others rose before noon and burned less midnight oil, Franklin, tongue half in cheek, wrote to a newspaper.
It wasn't until World War I that daylight savings was realized on a grand scale. Germany was the first state to adopt the time changes, to reduce artificial lighting and thereby save coal for the war effort. Friends and foes soon followed suit. In the U.S., a federal law standardized the yearly start and end of daylight saving time in 1918—for the states that chose to observe it.
During World War II the U.S. made daylight saving time mandatory for the whole country, to save wartime resources. Between February 9, 1942, and September 30, 1945, the government took it a step further. During this period, DST was observed year-round, essentially making it the new standard time, if only for a few years.
It is also a good idea to change the batteries in your smoke detectors as well.