Daylight saving time (DST) is the practice of moving clocks forward by one hour during the warmer months to extend evening daylight and reduce morning daylight. This helps make better use of natural daylight, saving energy and providing more daylight for outdoor activities after work or school. Typically, clocks are set forward by one hour in spring or late winter and set back an hour in autumn, summarized by the phrase "spring forward, fall back".
In many regions such as most of the United States, Canada, Europe, and parts of Australia, this means advancing clocks in spring and reverting in autumn to standard time. For example, in New South Wales, Australia, the 2025 daylight saving starts on October 5th at 2 am (clocks moved forward one hour), and ends on April 5th, 2026, at 3 am (clocks moved back one hour).
The goal is to reduce energy consumption through less use of artificial lighting and to make better use of daylight in the evenings while potentially impacting sleep and daily routines. Adjustments to sleep schedules and exposure to morning light are typically recommended to adapt smoothly.
Would more details about a particular country's daylight saving rules or history be helpful?
