Many Americans will turn their clocks back one hour on Sunday as daylight saving time ends. This yearly adjustment brings lighter mornings and darker evenings in most states.
All U.S. states observe daylight saving time except for Hawaii and Arizona, according to the National Conference of State Legislatures (NCSL). However, the part of the Navajo Nation within Arizona does observe it. U.S. territories including Guam, Puerto Rico, American Samoa, the Virgin Islands, and the Northern Mariana Islands do not change their clocks.
There is ongoing discussion about making daylight saving time permanent. Currently, 19 states have passed legislation to keep daylight saving time year-round. However, the NCSL notes:
"Because federal law does not currently allow full-time DST, Congress would have to act before states could adopt changes."
The time change is welcomed by some for the extra hour of sleep but seen as an inconvenience by others. Only 12% of U.S. adults support permanent daylight saving time, indicating division over the issue.
Vintage clocks at the Electric Time Company in Medfield, Massachusetts, will need to be reset to reflect this Sunday's time change.
Author's summary: The annual shift ending daylight saving time prompts clock resets nationwide amid debate on making permanent DST, requiring congressional approval despite growing state interest.