The practice of daylight saving time spans over a century of U.S. law. Here's who started it and why we observe the time ...

The rest of the country, including parts of the Navajo Nation within Arizona, observes daylight saving time. On Sunday at 2 a ...

Daylight saving time begins on Sunday, March 9, meaning most Americans will lose an hour of sleep as we "spring forward." ...

Daylight saving time is forcing a lot of people to move their clocks forward by an hour. But people who live here won't have ...

Daylight saving time stole an hour of sleep from most Americans over the weekend — with the exception of two states. The ...

Here's what to know about when DST started and ends in 2025, why it exists and if President Donald Trump is actually ending ...

Arizona maintains its refusal to observe Daylight Saving Time due to considerations of intense heat and lifestyle.

You may have been groggy this morning thanks to our clocks “springing forward” an hour overnight. Unless, of course, you live in either of the two states that don’t observe daylight saving ...

A poster from 1918 encourages citizens to write a postcard and lobby Congress in support of daylight saving time. Credit: ...

Hawaii and parts of Arizona do not participate in daylight saving time. The Navajo Nation ‒ which spans across Arizona, Utah and New Mexico ‒ does observe the time change, making it the lone ...

Daylight Saving Time ends on the first Sunday of November in the fall of each year. That's when states turn clocks back an hour. In the U.S., clocks will officially spring forward at 2 a.m. on Sunday, ...

Clocks had to "spring forward" one hour at 2 a.m. on Sunday, March 9, 2025, causing most people to lose an hour of sleep. We won't "fall back" to standard time again until Nov. 2, the first Sunday of ...