This is the world's most accurate clock -- for now, anyways Improvements in clocks are setting the stage for a redefinition of the second.

What • A flashlight that also keeps time in 18 cities around the world in 12- and 24-hour formats How much • $19.50 Where • Eddiebauer.com Why buy it • Any reason to reduce weight while ...

Night Stand Clock is a resourceful alarm clock app for your Windows Phone that has a wide selection of clock designs, includes integrated weather and can double as a flashlight.

New Atomic Fountain Clock Props Up the World's Time With Pinpoint Precision Learn about NIST-F4, the latest cesium fountain clock that now stands as one of the most accurate timekeepers in the entire ...

According to scientists at NIST in Boulder, their newest atomic clock, the NIST-F4, will help track time more precisely and help put global time on a more accurate frequency.