Daylight Saving Time (DST), often referred to as “saved time,” is the seasonal practice of setting clocks forward by one hour during the warmer months so that darkness falls at a later clock time. This system temporarily shifts an hour of daylight from the morning to the evening to better align human activity with the sun’s natural patterns. How It Works
The system alternates twice a year using a simple rule of thumb: “Spring forward, fall back.”
The Shift: In the spring, clocks move forward one hour, effectively “losing” an hour of sleep. In the autumn, clocks move backward one hour, “gaining” that hour back.
U.S. Schedule: In the United States, DST starts on the second Sunday in March and concludes on the first Sunday in November.
Global Variation: The practice is predominantly utilized in North America and Europe. Regions near the equator generally skip it because their daylight hours remain consistent year-round. The History
The concept of maximizing natural light has a varied and surprising history:
Benjamin Franklin (1784): He playfully suggested that Parisians could save money on candles by waking up earlier to utilize morning sunlight.
George Hudson (1895): A New Zealand entomologist formally proposed a modern two-hour seasonal shift because he wanted more evening daylight to collect insects after his day job.
World War I (1916): Germany became the first nation to officially implement DST to ration coal and electricity for the war effort, with other nations soon following suit. The Ongoing Debate
While the system was designed to optimize daylight, it remains highly controversial and heavily debated by experts: 7 Things to Know About Daylight Saving Time | Johns Hopkins