Do moon phases affect fishing success? Explore the history of Solunar theory and see how the Citizen Tsuki-yomi A-T watch lets you track moon phases in style.

He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of ...

Amazon's epic weeklong dealsfest is winding down, but you can still snag a discount Casio, Seiko, or Citizen if you know ...

Earth’s rotation is speeding up. This summer, our planet will spin faster than usual, creating the shortest day since records ...

In the final analysis, by showing that 10 heterogenous clocks across three continents could agree with each other to within a ...

The science behind why the Earth will spin just a little bit faster on July 9, July 22, and August 5, this year.

Scientists expect a specific day in July to be the shortest day of 2025 so far, running just over a millisecond faster than ...

Knowable Magazine reports on attosecond science, revealing how scientists study atomic interactions at unbelievable speeds to ...

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and ...