Daylight saving time (DST) is the practice of advancing clocks during warmer months so that evenings have more daylight and mornings have less. In the United States, DST begins on the second Sunday of March and ends on the first Sunday of November. In 2025, DST will begin on March 9 and end on November 2.
DST has a number of benefits, including reducing energy consumption, decreasing traffic accidents, and improving public safety. A study by the U.S. Department of Energy found that DST saves about 1% of electricity use nationwide. DST can also reduce traffic accidents by making it easier to see at night. Additionally, DST can improve public safety by making it more difficult for criminals to operate under the cover of darkness.
