It's that time of the year again where everyone in the United States is required by law to adjust their clocks for the bi-annual practice of Daylight Saving Time.

This time around folks in the country are to adjust their clocks back exactly one hour. As the saying goes, "Spring forward and fall back for daylight saving time."

While majority of citizens in the country do not really use analog clocks anymore, those who do would have to manually adjust their clocks back one hour for the yearly practice. Most digital clocks and even those on mobile phones, computers, and other devices do adjust automatically for Daylight Saving Time.

With everyone in the country required to do so, it would only be sensible to follow suit to prevent anyone from getting left behind or be ahead of everyone else.

The practice of adjusting the clocks for Daylight Saving Time was enacted into law back in 1966 through the Uniform Time Act as signed by then president Lyndon Johnson. Several states like Arizona and Hawaii are, however, not required to do so, and have not really practiced Daylight Saving Time.

Other United States territories, like Guam, Puerto Rico, the Virgin Islands, and American Samoa also do not practice Daylight Saving Time.

The main purpose of the practice is described in the name itself, and serves to adjust the time in order to take advantage of the extended daylight during the different seasons to save electricity. All in all the practice will be saving about 1.3 billion kilowatt-hours of power each year, which is enough to power 122,000 homes for a year.

Back in March 13 of this year, Daylight Saving Time began at 2 a.m. where all clocks were adjusted ahead one hour. In the coming weekend, on Sunday, Nov. 6, Daylight Saving Time will end at 2 a.m. with everyone adjusting their clocks back one hour.