Liputan6.com, Jakarta - Daylight Saving Time (DST), also known as daylight saving time, is a global practice that involves adjusting clocks.
The goal is to maximize the use of natural daylight, shifting one hour of daylight from morning to evening, meaning people can enjoy longer daylight hours in the afternoon, especially during the spring and summer.
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Generally, this practice involves moving clocks forward one hour in early spring and moving them back one hour in autumn.
This change often impacts the daily routines and sleep schedules of millions of people worldwide.
The implementation of daylight saving time clocks is designed to conserve energy and encourage outdoor activities in the afternoon.
Daylight Saving Time Clocks: Function, Mechanism, and Debate
Daylight Saving Time (DST) is a system of periodic time adjustments, usually by moving clocks forward one hour to optimize the use of natural sunlight.
The primary mechanism of DST is "spring forward" in the spring and "fall back" in the fall.
Daylight Saving Time was introduced with a noble goal: to better utilize daylight hours in the evening and reduce energy consumption.
Proponents argue that DST provides longer summer nights, which benefits businesses and recreational activities.
However, the practice of changing clocks twice a year is often unpopular, and its effectiveness in achieving its original goal remains debated.
Many experts criticize daylight saving time clocks for causing sleep disturbances and potential health impacts related to changes in the human body's circadian rhythm.
This abrupt adjustment can affect sleep patterns and alertness.
Some studies suggest that energy savings are minimal, and in some cases, energy consumption actually increases due to the use of heating or cooling during the darker mornings or evenings.
Daylight Saving Time in the United States and Canada
In most of the United States and Canada, Daylight Saving Time in 2026 will begin on Sunday, March 8, at 2:00 a.m. local time.
At that time, clocks will be moved forward one hour, from 2:00 AM to 3:00 AM.
This change will result in the loss of an hour of sleep for many people, with sunrise and sunset occurring one hour later than usual.
This DST period will end on Sunday, November 1, 2026, at 2:00 AM local time.
Clocks will be moved back one hour, from 2:00 AM to 1:00 AM.
Overall, DST will be in effect for 238 days, or about 34 weeks, in 2026.
However, not all areas of the United States observe this daylight saving time change.
Hawaii and most of Arizona, except for the Navajo Nation, do not observe DST.
In Canada, most provinces and territories observe DST, but there are some exceptions.
Some territories in British Columbia, Nunavut, Ontario, Quebec, and Saskatchewan have opted not to implement this time change.
Daylight Saving Time Clocks in Europe and the UK
In the UK and most of Europe, Daylight Saving Time in 2026 will begin on Sunday, March 29.
Clocks will be moved forward one hour at 01:00 UTC.
For example, countries in the Central European Time (CET) zone will move their clocks forward from 02:00 to 03:00, while those in Eastern European Time (EET) will move their clocks forward from 03:00 to 04:00.
This DST period will end on Sunday, October 25, 2026, in most of Europe and the UK. At that time, clocks will be moved back one hour at 01:00 UTC (03:00 CEST).
Even so, there are a few exceptions in Europe that do not observe daylight saving time clocks.
Countries such as Iceland, Belarus, and Russia have chosen not to participate in this time change.
Daylight Saving Time Clocks in the Southern Hemisphere
Unlike the Northern Hemisphere, the Daylight Saving Time schedule in the Southern Hemisphere follows the opposite pattern.
While the north enters winter and ends DST, the south begins its summer time period.
For example, in Australia, DST for the 2025–2026 season will take effect in October 2025.
Clocks will return to standard time on Sunday, April 5, 2026.
However, not all states in Australia observe DST.
New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory are among the regions that follow suit.
In contrast, Queensland and Western Australia have opted not to implement this time change.