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 ...

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.

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, ...

Which states don't participate in daylight saving time? Daylight saving time is not observed in Hawaii and most of Arizona, as well as in American Samoa, Guam, Northern Mariana Islands ...

Trump added. While most states follow this biannual clock change, Arizona and Hawaii are the only two that don't observe daylight saving time and refuse to roll their clock forward and backward ...

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 ...