Daylight saving time: When and why we spring clocks forward

Friendly reminder: daylight saving hour returns at 2 a.m.( local day) on Sunday, March 11, which means it’s virtually time to “spring” those clocks forward.

Sadly, yes, we’ll lose an hour of sleep. But on the bright side( literally ), we’ll be gaining an hour of evening lighting through Nov. 4 — when it’s time to “fall” back.

Daylight saving day will be extra special this year, as it marks the 100 th anniversary of the event. The tradition of turning clocks forward officially began on March 19, 1918.

Here’s what you need to know about the soon-to-be century-old tradition.

When did daylight saving time start?

It was established during World War I as “a way of conserving ga needed for war industries and of extending the working day, ” the Library of Congress explained in a post online.

But it was only temporary. The law was repealed about a year later, on August 20, 1919, as soon as the war was over.

“However, the sections of the 1918 law, which had established standard period zones for the country, remained in effect, ” the library said. “In 1921, Congress readjusted the western border of the standard central period zone, changing parts of Texas and Oklahoma into this zone.”

The topic of daylight saving surfaced again during World War II. On Jan. 20, 1942 Congress re-established daylight saving time.

More than two decades later, in 1966, President Lyndon B. Johnson signed into law the Uniform Time Act, proclaiming daylight saving period a policy of the U.S. and establishing uniform start and end times within standard day zones.

What are the rules?

Daylight saving period and period zones are regulated by the U.S. Department of Transportation( DOT ) under the Uniform Time Act. Daylight saving begins each year on the second Sunday in March, starting at 2 a.m.

“If a nation chooses to observe Daylight Saving Time, it must begin and end on federally mandated dates, ” the DOT says.

Does everyone change their clocks?

No. Hawaii, the majority of members of Arizona, and a handful of U.S. provinces — including American Samoa, Guam, Puerto Rico and the Virgin Islands — do not observe daylight saving time.

A bill called the “Sunshine Protection Act ,” which would allow Florida to remain on daylight saving day year-round, is heading to Gov. Rick Scott’s desk this week.

If Scott passes the bill, Congress would need to amend existing federal statute to allow the change.

While the rest of the East would define their clocks back in the fall, Florida wouldn’t, leaving it with more sunshine in the evening during the winter.

Why does it matter?

There are several reasons set out above officials believe daylight saving time is beneficial.

Some say it saves energy, because people tend to spend more time outside when it’s lighter out. The DOT asserts it also “saves lives and prevents traffic injuries, ” because visibility is better.

Lastly, the DOT says it reduces crime.

“During Daylight Saving Time, more people are out conducting their affairs during the daylight rather than at night, when more crime pas, ” government departments explained.

However, some believe the process is a “hassle.”

Proponents of scrapping daylight saving day argue it’s generally unnecessary, disturbs sleep patterns and has recently become even more complicated. In 1986, Congress widened daylight saving from a six- to seven-month period and extended it again in 2005 to eight months — mid-March to mid-November.

“Congress truly gave us a wise compromise in 1966 with six months of standard time, but because of the vestibules on behalf of daylight we now spring forward in the middle of the winter, ” Michael Downing, author of “Spring Forward: The Annual Madness of Daylight Saving, ” told Fox News in 2015.

Disagreements over daylight saving isn’t new. In 1965, before the Uniform Act was passed, 71 major cities in the U.S. with a population of over 100,000 were utilizing daylight saving, while 59 others were not.

“People do not like the hassle of adjusting their clocks twice a year, ” Downing added.

Fox News’ Matt Finn and The Associated Press contributed to this report .

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