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

Time zones are not always in straight lines on the longitudes on Earth. This is because they may need to curve around country borders. You can see this in the map below.

Here on Earth, a day is just under 24 hours long, hence our 24 time zones. On the Moon, a day is just under 30 times longer. We track a lunar “day,” one complete rotation, by the “phases ...

Because time moves ever so slightly on the surface of the Moon, researchers have created a way to keep lunar clocks in sync with Earth ones.

According to Time and Date, a website that tracks time and time zones, the current record holder for the shortest day on ...