Love it or hate it, many Americans will turn their clocks back one hour on Sunday as daylight saving time ends. This change means lighter mornings and darker evenings in most states.
Almost all states observe daylight saving time except for Hawaii and Arizona. However, the part of the Navajo Nation located in Arizona does observe it. U.S. territories such as Guam, Puerto Rico, American Samoa, the Virgin Islands, and the Northern Mariana Islands do not change their clocks.
Currently, 19 states have passed laws to keep daylight saving time year-round. However, federal law does not permit permanent daylight saving time, so Congress must approve such changes for states to implement them.
"Because federal law does not currently allow full-time DST, Congress would have to act before states could adopt changes." — National Conference of State Legislatures (NCSL)
Some people welcome the extra hour of sleep gained during the fall change, while others find the adjustment disruptive. The time shift affects both clocks and human circadian rhythms nationwide.
Vintage clocks at the Electric Time Company in Medfield, Massachusetts, also require resetting.
Author’s summary: Daylight saving time ends Sunday, shifting clocks back an hour nationwide, stirring debate on whether the practice should remain seasonal or become permanent.