Your Circadian Rhythm is your body’s internal 24-hour clock that not only controls your sleep, but also other important parts ...

Military time, also known as the 24-hour clock, is a system the military uses to eliminate confusion between morning and afternoon hours, since the armed forces are in operation around the clock.

As the U.S. stock market moves closer to trading “around the clock,” we need to consider when a trading day ends and the next ...

Countless students arrive at school sleep-deprived. Health experts say daylight saving time adds to the problem.