Daylight Saving Time (DST) begins Sunday, March 9, when clocks will move forward one hour at 2 a.m. local time, shifting to 3 a.m. This annual adjustment results in longer daylight hours in the evening and darker mornings.
Originally introduced during World War I to conserve energy, DST remains in use across much of the United States, Canada, and Europe. However, some regions, including most of Arizona and Hawaii, do not observe the time change. While DST aims to maximize daylight hours and reduce electricity use, its effectiveness and impact on health continue to be debated.
DST will last until the first Sunday in November, when clocks are set back an hour.
