We can tell the time without saying AM and PM though - for this, we use the 24 hour clock. The 24 hour clock always uses 4 digits, and we use this system most often with digital clocks.

It keeps things simple by using a cheap 24 hour clock movement to rotate a GoPro as the Earth spins. The result is a time-lapse where the stars appear to be stationary while the horizon rotates.

If you’ve ever wondered why you can’t nod off at night it could be down to your body's internal clock - also known as the circadian rhythm. But what is the circadian rhythm? We all work on a 24 hour ...

Your body clock regulates hormones that impact mood, metabolism, and sleep. Learn how to align your lifestyle with your ...

Splicing together footage from more than 12,000 films, Christian Marclay’s cinematic masterpiece might be the most complex ...

The speedometer measures almost all the way to 240 kph which works well for a 24-hour clock too. With the major part sourced, he found an Arduino clone and hit the road (figuratively speaking).

We live in a world that rarely slows down—late-night work, glowing screens, and irregular schedules have become the norm. But ...

We can tell the time without saying AM and PM though - for this, we use the 24 hour clock. The 24 hour clock always uses 4 digits, and we use this system most often with digital clocks.