4 things to know about daylight saving time ending this Sunday, Nov. 3

Daylight saving time ends early Sunday morning, Nov. 3, meaning clocks fall back an hour, giving residents an extra hour of sleep.

Officially, daylight saving time ends at 2 a.m. Nov. 3. Clocks will be turned back an hour.

Where does the daylight saving practice come from?
Daylight saving time stems from the Uniform Time Act of 1966 that established a uniform daylight saving time throughout the U.S., according to the U.S. Department of Transportation, which oversees daylight saving time.

Daylight saving time is observed to save energy, increase traffic safety and reduce crime, according to the U.S. DOT:

  • By¬†shifting the day ahead an hour, one hour of daylight is moved from the morning to the evening, during which time people are more likely to spend time outside and reduce energy consumption indoors.

  • During daylight time, a greater amount of travel occurs during the daylight, which means better visibility for drivers.

  • With daylight stretching longer into the evening, more people are able to conduct business and personal errands during the day rather than going out at night, during which time more crime occurs.


Who observes daylight saving time?
According to the U.S. DOT, states can choose to exempt themselves from observing daylight saving time through state law. Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands and most of Arizona have opted out of daylight saving time. However, if a state observes daylight saving time, the state must comply with federally mandated dates, such as when daylight saving time begins and ends.

According to a July 219 report on daylight saving time by the Congressional Research Service, 39 states have introduced legislation that would change the summer observance of daylight saving time, 29 states have introduced legislation proposing permanent daylight saving time, 26 states have introduced legislation to establish permanent standard time, and five states have introduced legislation to study the effects of daylight saving time.

Has Tennessee considered changing daylight saving time?
Yes. On May 21, Gov. Bill Lee signed HB 247, making Tennessee one of 26 states to introduce legislation to establish permanent daylight saving time as the standard time in Tennessee, meaning clocks would no longer turn back. However, the bill would only go into effect if the U.S. Congress authorizes states to observe daylight saving year-round, according to the bill text. The bill is not the same as opting out, like other states have done, because it calls for daylight savings to be observed year-round, therefore Tennessee is still required to abide by federal regulation.

When will it begin again?
Daylight saving time will begin again March 8, 2020. Clocks will then spring ahead an hour.
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