On Nov. 18, 1883, Americans adopted four standardized time zones, replacing a confusing, dangerous hodgepodge of times.

Morning light helps you synchronize, or align, your circadian rhythms with the outside world and makes it easier to fall ...

We track down the only tick-tocks that matter, nine traditional alarm clocks that tell the time with minimum fuss and maximum ...

On the 60th anniversary of the first Speedway grandfather clock trophy, those who have a clock talk about what makes it such ...

On the 60th anniversary of the first Martinsville Speedway grandfather clock trophy, those who have a clock talk about what ...

Christian Marclay’s 24-hour film — and a century of cinema history — is on view at the Museum of Modern Art, returning after ...

Life is already stressful enough without considering post-election holiday family gatherings! Help family and friends find ...

NBC staffers had quite the reaction when it was announced that Craig Melvin would be replacing Hoda Kotb on Today come the ...

The most precise clocks in the world will lose only one second every 300 billion years—and someday they might fit in your ...

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

Vulcain has created a desk clock that resembles the clock in the former TWA terminal — now the TWA Hotel — at Kennedy ...