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 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 ...

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 ...

There's a few undeniable truths about Arizona: 1) our haboobs are no joke; 2) we simply adore vanity license plates; and 3) ...

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

Daylight Saving Time begins on Sunday, March 9 at 2 a.m. local time and ends on Sunday, Nov. 2. Currently, only Hawaii and parts of Arizona do not observe Daylight Saving Time. Mark your calendars ...

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, ...

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.