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Daylight saving time in the world. Areas shown in the same color start and end DST within less than a week of each other. As of November 2024, the following locations were scheduled to start and end DST at the following times: [1] [2]
Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time.
Many states subsequently introduced daylight saving time, and in 1966, the Uniform Time Act standardized the dates when it begins and ends. [3] Hawaii, most of Arizona, and the U.S. territories have opted to observe permanent standard time, [4] but the Uniform Time Act forbids observation of permanent daylight saving time. [3]
An updated analysis from Chmura Economics & Analytics estimated the annual economic cost of daylight saving time at $672 million, including roughly $375 million owing to increased heart attacks ...
A growing backlash to daylight saving time. Daylight saving time, which originated during World War I to conserve energy, has been the subject of debate in recent years as people start to question ...
Stacker turned back the clock to investigate the history behind daylight saving time—and why some people argue it shouldn't exist anymore.
The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2025a of the tz database. [2]
Daylight saving time is coming to an end, Fayetteville. Here's when to 'fall back' for the time change this year.