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

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 ...

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

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

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

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

Daylight saving time began early Sunday morning, but Arizonans didn't need to adjust their clocks — only how they track time in the rest of the country. Arizona does not observe daylight saving ...

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 ...

The law allows states and territories to opt out of daylight saving time, however. Arizona and Hawaii are on permanent standard time, along with Puerto Rico, the U.S. Virgin Islands, Northern ...

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

According to the Department of Transportation, daylight saving time saves energy, prevents traffic injuries and reduces crime. Hawaii and parts of Arizona do not participate in daylight saving time.