Daylight saving time began across most of the United States at 2 a.m. Sunday, March 8, when clocks moved forward by one hour. The change created a 23-hour day and affected daily routines such as commuting and sleep schedules. Many Americans continue to debate the system of changing clocks twice each year. A recent national poll shows strong public skepticism about the practice. Lawmakers, health experts, and industry leaders remain divided over whether the country should adopt permanent daylight saving time or permanent standard time. The issue continues to attract attention because both options may create advantages and disadvantages in different regions.

Daylight saving time has historical roots in efforts to extend evening daylight and improve energy use. Time zones in the United States were first standardized in 1883 to support railroad schedules. Governments later introduced daylight saving time during different periods, including wartime policies. International records indicate that about 140 countries have used the system, although only about half still apply it today. Researchers have also studied how clock changes influence health and safety. Some studies show that sudden time adjustments can disturb circadian rhythms and affect sleep quality. Transportation research reports a short-term increase in accidents after the spring clock change. Congress has discussed proposals to create a permanent national time system, but political disagreements have prevented a final decision. Until national legislation changes the system, seasonal clock adjustments will continue across most of the United States.