Physicists have made a breakthrough in the development of a nuclear clock, a new kind of ultraprecise clock that could ...

At a time when the passage of time was dictated by the movement of the sun and the seasons, the introduction of “clock time” ...

IN these days of accurate clocks and watches no one thinks of using a sun dial to tell the time of day. At best such an instrument can be right but four times a year, and in many places it can ...

Clocks have become a staple of every country, business, and household in the world. With countries adopting time zones and ...

"Fall back" should be easier than the time change in spring, but it still may take a while to adjust your sleep habits.

Nasha is a Managing Editor for CNET, overseeing our sleep and wellness verticals. She is a nutrition, mental health, fitness and sleep science enthusiast. Her passion for mindful and holistic ...

As convenient as it might be to use your phone as an alarm clock, standalone alarm clocks come with all kinds of features that can make waking up — or even going to sleep — a little less painful.

Learn more While most of our picks for the best alarm clock use beeps or music to wake you up, many people may opt for an alarm that doesn't rely on sound, including those who are deaf or hard of ...

A sundial was accurate enough for most purposes ... it easier for travelers and for business people not to have to change clocks or deal with a time difference when scheduling phone calls and ...

Daylight saving time ends at 2 a.m. local time Sunday, which means you should set your clock back an hour before you go to bed. Standard time will last until March 9 when we will again "spring ...