Daylight saving time (DST) is the practice of advancing clocks during summer months so that evening daylight is extended. The Uniform Time Act of 1966 established DST in the United States, and the Energy Policy Act of 2005 modified the DST schedule. Currently, DST begins on the second Sunday of March and ends on the first Sunday of November.
In 2025, the DST schedule will change again. The Sunshine Protection Act of 2021 will make DST permanent in the United States, eliminating the need to change clocks twice a year. This change will have a number of benefits, including reducing the risk of car accidents, heart attacks, and strokes. It will also save energy and boost the economy.