Thanks to a speed-up of Earth's rotation, the length of the astronomical day and the length of the clock day aren't quite ...

NASA's newest astrophysics space telescope launched in March on a mission to create an all-sky map of the universe. Now ...

“The optical clock community is strongly motivated to obtain the best possible set of measurements before the SI second is ...

Alabama spans a wide region, but every city, from Huntsville to Mobile, shares the same official time. Here's what time zone ...

People across continents begin their day as the sun rises, with the average wake-up time gathering around 7:00 am local time. By 9:00 am, the majority of the world's population is active and engaged.

Local officials on Monday morning unveiled a World Cup countdown clock in front of the fieldhouse at Overland Park’s Scheels ...

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.

The universal need to be on time keeps everyone on the move, shaping society into a permanently well-oiled machine. Whether you find yourself glancing at a clock on the wall or checking your phone, ...

But nine o’clock passes, and they are left behind. The clock ticks on indifferently, dramatic necessity recedes, and time resumes its reign. The waves rise briefly, the ocean remains.

In 1967, the world's timekeepers, an intergovernmental body called the General Conference on Weights and Measures, agreed to define time using atomic clocks, rather than by the Earth's rotation.

Gerginov, dressed casually in a short-sleeve plaid shirt and sneakers, spoke of the instrument with an air of pride. He had recently replaced the clock’s microwave cavity, a copper passageway in ...