The Start of Daylight Saving Time

The Start of Daylight Saving Time is observed next on Sunday, March 9th, 2025 (260 days from today).

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Usually, every time from 4 am to 7 pm, you will feel that it is morning, the rest of the time it is dark and it is time for people to rest or sleep. It is customary for people to go to bed at 24 o'clock and wake up at 6 am. If things go on like this, there's nothing to talk about. Almost anywhere in the world in summer you will feel the day longer, the dawn comes earlier, and you will feel the light from 3 o'clock to 9 o'clock every day. However, the habit of most people is the same, sleeping at 24 hours and getting up at 6 am.

Our earth revolves around the sun and rotates on its axis. In summer, in some parts of the earth such as some parts of the United States and Canada you can clearly feel the dawn starting at 2 am, this time people are still sleeping and they just woke up after 4 hours.

Therefore, The Start of Daylight Saving Time is recorded on the second Sunday in March. As a campaign to save the abundant energy of nature.

History of The Start of Daylight Saving Time

The story begins in 1907, an English builder named William Willet during an early morning horseback ride noticed that all the houses were closed and people were fast asleep even though the sun was already growing out, and he felt that daylight was being wasted.

His idea at the time was why don't people go to bed earlier, maybe at 11pm the day before and get up at 5am the next day. Or to do it another way, in spring and summer everyone should turn their clocks 1 hour faster, and he calls it "Daylight Saving Time" (DST) daylight). A 24-hour time in DST would correspond to a 23-hour time, and 6 a.m. in DST would correspond to 5 a.m. in standard time. By the trick of the watch people still keep their habits while saving daylight time.

Willet has devoted a small fortune to lobbying businessmen, members of Congress, and the United States Congress to get his ideas realized. But his proposal was met with ridicule for the most part. One community opposes it for moral reasons, calling it the crime of "lying" about real-time.

Attitudes changed after the outbreak of World War I. The government and people recognize the need to conserve coal used to heat homes. The extended light system was officially adopted in 1915 by the Germans, and the Germans were the first in the movement, as a fuel-saving measure during World War I. This led to the introduction of British daylight saving time in 1916: From May 21 to October 1, clocks in the UK were set one hour ahead.

Although there was a lot of opposition from the public and the issue was brought to Congress, in 1918 DST was finally introduced to the United States. At 2 a.m. on March 31, 1918, all clocks in the United States were adjusted by one hour. Canada adopted a similar policy later that year.

However, in the United States the experiment of Daylight Saving Time lasted only until 1920, when the law was repealed due to opposition from dairy farmers (cows that did not pay attention to the clock). During daylight saving time, no less than 28 repeal bills were introduced into parliament, and the law was removed from the books.

The topic of DST was forgotten until America was dragged into the Second World War after the attack on Pearl Harbor, DST was now necessary to save energy.

Inconsistent interstate time zone compliance has created significant confusion for interstate bus and train service. To remedy this situation, Congress passed the Uniform Time Act in 1966, establishing consistent use of Daylight Saving Time in the United States: Clocks would be set one hour ahead on Sunday the last Sunday of April and back one hour to the last Sunday of October.

In 1986, the United States Congress passed a bill to increase Daylight Savings time, moving the start date to the first Sunday in April. The goal is to conserve the oil used to generate electricity — an estimated 300,000 barrels annually. (In 2005, the 48th state to observe Daylight Saving Time was the entire state of Indiana.)

For the first time in more than 20 years, in 2007, the rules for daylight saving time were changed. New changes including prolonging the life of daylight saving time, were enacted by the Energy Policy Act of 2005, in the interest of reducing energy consumption. The rules increased the duration of the DST to about a month. Although the US Congress retains the power to revert the previous law if the change is unpopular or if the energy savings are negligible, Daylight Saving Time is now in effect for 238 days, or about 65% of the year.

Currently in the US, DST starts on the second Sunday of March and ends on the first Sunday of November, it is applicable to most US states.

The only two states in the US that do not observe daylight saving time are Hawaii and Arizona. However, some overseas territories do not observe daylight saving time. Those territories include American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the US Virgin Islands.


The Start of Daylight Saving Time has been observed the second Sunday in March.


Sunday, March 12th, 2023

Sunday, March 10th, 2024

Sunday, March 9th, 2025

Sunday, March 8th, 2026

Sunday, March 14th, 2027

Also on Sunday, March 9th, 2025

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