The standard day on Earth consists of 24 hours, which is 1,440 minutes and 86,400 seconds. However, shorter days are ahead in the next few weeks. The rotation of the Earth changes due to several ...

As if it's not already hard enough to find the time to do everything you need to do in a day, now you're about to lose another whole millisecond or more. In fact, experts say Tuesday, July 22, could ...

Peak sunshine has arrived in the Northern Hemisphere — the summer solstice. Friday is the longest day of the year north of the equator, where the solstice marks the start of astronomical summer. It’s ...

As Earth spins faster than it has in decades, atomic clocks are catching the difference, and shorter days are on the horizon. When you purchase through links on our site, we may earn an affiliate ...

July 9 was unusually short thanks to changes in how fast the Earth is spinning. But two other days this summer are expected to be even shorter. When you purchase through links on our site, we may earn ...

The length of a day on Earth may not be as fixed as we once believed. For centuries, we’ve lived by the 24-hour cycle, but recent research reveals that the planet’s rotation is gradually slowing down, ...

On Sept. 22, the autumnal equinox, which signals the start of fall in the Northern Hemisphere, finally brings an end to our long, hot summer on Monday at 2:19 p.m. EDT. This happens at a precise ...

Meteorological fall begins on September 1, while astronomical fall starts on September 22 at 2:19 PM ET. Meteorological seasons are based on temperature, while astronomical seasons are based on the ...

The winter solstice also marks the first official day of winter in the Northern Hemisphere. Here's what to know this year.

The winter solstice will officially kick off the season of returning light this Sunday, Dec. 21, at 7:03 a.m. in the Pacific ...

Earth takes 24 hours to complete a full rotation in a standard day, equal to exactly 86,400 seconds. July 9 was the first of three days in which a millisecond or more could be shaved off the clock on ...