That big grandfather clock in the library might be an impressive piece of mechanical ingenuity, and an even better example of fine cabinetry, but we’d expect that the accuracy of a pendulum timepiece ...

Back in the old days, we didn’t have fancy digital clocks. No, we had good analog clocks with a big hand and a little hand, and if you wanted to know the time you had to look at the clock and figure ...

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Atomic clocks. They almost sound like something out of science fiction, or an experiment confined to some elite physics lab, but in reality, they’ve been around since the 1950s in one form or another.

The remarkable accuracy of atomic clocks makes them excellent instruments for timekeeping and other precision measurements. Writing in Nature, the Boulder Atomic Clock Optical Network (BACON) ...

These days, checking the time is as easy as pulling out your smartphone or asking your favorite home assistant device to read it to you. But if you spend your days seated at a desk or workstation, ...

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From stress-free sleep to subtle design psychology, the missing clock in your hotel room isn’t a mistake — it’s a deliberate ...

This article is a part of CNN Underscored’s Guide to Sleep, a weeklong focus on everything you need to sleep better. We’ll be featuring new products, tips and exclusive deals all week, so check in ...

A smart alarm clock is essentially a smart speaker — like an Amazon Echo or a Sonos One — but one that’s specially designed with extra privacy features so that it can live in your bedroom. It ...

If you start your day before the sun rises, or if you’re looking for a gentle alternative to a blaring alarm clock, a sunrise alarm clock may be your new favorite tool. These clocks mimic the natural ...