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Daylight Saving Time, explained

Guides and articles on the history of DST, the science of the time change, how it works around the world, and the debate over making it permanent.

The United States Capitol at dusk, where the House voted to make Daylight Saving Time permanent under the Sunshine Protection Act in 2026
News & Politics

Daylight Saving Time 2026: The House Voted to Make It Permanent — Here's Where It Stands

The House passed the Sunshine Protection Act on July 14, 2026, but the Senate hasn't voted. A plain-language update on the 2026 daylight saving bill, the three competing proposals, and what happens next.

6 min read
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A wall calendar with the 2027 Daylight Saving Time dates circled, springing forward March 14 and falling back November 7
Schedule

Daylight Saving Time 2027: Official Start and End Dates in the United States

When does daylight savings 2027 start and end? Clocks spring forward on Sunday, March 14, 2027, and fall back on Sunday, November 7, 2027. Here is the full breakdown.

5 min read
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A tired person reaching for coffee in early morning darkness, illustrating the sleep loss and health risks of the Daylight Saving Time spring forward
Analysis

The Bad of Daylight Saving Time: Sleep Loss, Health Risks, and Hidden Costs

The downside of changing the clocks — sleep disruption, short-term health risks, traffic spikes, and the case against permanent DST from sleep scientists.

6 min read
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People enjoying a long bright evening outdoors at sunset, one of the most popular benefits of Daylight Saving Time
Analysis

The Good of Daylight Saving Time: Brighter Evenings and Real Benefits

Why do we still change the clocks? A balanced look at the genuine upsides of Daylight Saving Time — longer evenings, more outdoor time, and the case for brighter nights.

6 min read
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The United States Capitol building under a bright sky, where the daylight savings bill to end the time change permanently awaits a Senate vote
Policy

Daylight Savings Bill: When Does Daylight Savings Time End Permanently?

Will daylight savings time end permanently? An in-depth update on the federal daylight savings bill, the Sunshine Protection Act, and state legislation aiming to lock the clock.

6 min read
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A clock winding back from 2:00 AM to 1:00 AM, the extra hour gained when clocks fall back to end Daylight Saving Time in November
Explainers

Fall Back Explained: Gaining an Hour and What to Do With It

The November time change is the gentler one — clocks rewind from 2:00 AM to 1:00 AM. Here's what it means and how to make the most of the extra hour.

5 min read
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A wall clock set to 2:00 AM, the exact moment clocks spring forward one hour to begin Daylight Saving Time each March
Explainers

Spring Forward Explained: Why We Lose an Hour in March

A clear, practical guide to the March time change — what happens at 2:00 AM, why we do it, and how to handle the lost hour of sleep.

5 min read
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A vintage pocket watch beside an antique clock face, evoking the centuries of history behind Daylight Saving Time from Benjamin Franklin to the Uniform Time Act
History

The History of Daylight Saving Time: From Ben Franklin to Modern Law

How a half-joking 1784 essay became a global, twice-yearly ritual of changing the clocks — and why the United States standardized it in 1966.

7 min read
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A restless sleeper waking in dim morning light, illustrating the sleep disruption and health effects of the Daylight Saving Time clock change
Health

The Health Effects of Daylight Saving Time on Your Sleep

Changing the clocks twice a year has real, measurable effects on sleep, mood, and even heart health. Here's what the research shows.

6 min read
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A glowing globe at twilight, representing the many countries and time zones that observe Daylight Saving Time around the world
World

Daylight Saving Time Around the World: A Global Guide

Not every country changes its clocks — and the ones that do don't all agree on when. A tour of how DST works across the globe.

6 min read
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Sunlight breaking through clouds over a city skyline, symbolizing the Sunshine Protection Act's push to make Daylight Saving Time permanent year-round
Policy

Will Daylight Saving Time Be Permanent? The Sunshine Protection Act

The push to lock the clocks and stop changing them twice a year — where the law stands and what permanent DST would mean.

6 min read
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