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 ...

No, your power didn't go out — the time changed to daylight saving time! For some, daylight saving time is a sign that spring ...

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 ...

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 ...

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

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

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 ...

The start of daylight saving time means dawn and sunset will be an hour later on Sunday, March 9 than they were on Saturday, March 8. For most Americans, except those in Arizona, Hawaii ...

The Navajo Nation in the northeast quarter of the state does observe daylight saving time. The Hopi Nation, fully surrounded ...