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Weather IQ: Daylight saving time and its changing times

Daylight saving time ends in 2021 on Nov. 7. Here is when it began in the United States and the sunrise and sunset changes going forward into winter.

CHARLOTTE, N.C. — Tis' the time of the year that everyone “Falls Back” and returns to standard time. 

So let’s learn more about daylight saving time.  

Nov. 7 at 2 a.m. officially ends 238 days under Daylight Saving Time. That means it lasts for 34 weeks or over 65% (65.4%) of the year. 

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Daylight saving time history and Ttmeline:

The idea of changing clocks was first mentioned by Ben Franklin, but the modern idea was credited to a man named George Hudson in 1895.  

  • DST was first used here in the United States in World War I in 1918 for 7 months to conserve electricity. That's its main purpose, to conserve energy.
  • It came back again in 1942 for more than half of WWII. It lasted all year long and was called WAR TIME.  
  • Later in 1966 The Uniform Time Act set an official beginning and end time to Daylight Saving Time. 
  • In 1973, the Emergency Daylight Saving Time Energy Conservation Act extends DST to 8 months and saved millions of barrels of oil
  • In 1986, The beginning of daylight saving time was moved to the beginning of April
  • 2007, the Energy Act voted two years prior which moved DST to its current time starting in early March and moved the end to after Halloween into early to mid-November.

FACT: Hawaii and Arizona are the only two states that do not change their clocks.

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Sunrise, sunset and day length changes going forward.

Obviously, we gain an hour by turning our clocks back from 2 a.m. to 1 a.m. But physiologically this messes with our brains.

Our sunrise time goes to 6:50 and our new sunset time is 5:22 p.m. under 10 hours and 32 minutes of daylight.

Credit: WCNC

A month later we lose 40 minutes of daylight  

The 5:10 p.m. sunset time is the earliest sunset in Charlotte. From this date, the sunset time slowly gets later and our sunrise time doesn't start getting earlier until mid-January. 

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Credit: WCNC

Welcome back to standard time everyone.

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