However, you can tell the time without saying am and pm. To do this you can use the 24-hour clock. The 24-hour clock always uses 4 digits. You see this most often on digital clocks. Complete this ...

A clock with hands (an analogue clock) shows us the numbers 1-12. There are 24 hours in one day, so we measure time by splitting the day into two halves. The first 12 hours of the day, from ...

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

clocks will be set back one hour to 1 a.m. local standard time, giving us more light in the morning and less in the evening.

Historic clock restoration specialist Chuck Roeser (right) of Lockport, New York and his assistant Tony Clower wipe away the oil after lubricating the E. Howard & Co. tower clock in the old, red ...

And that is wonderful.” The downside is that these time changes do disrupt our circadian rhythm, the 24-hour internal clock in our brain that regulates cycles of alertness and sleepiness by ...

This circadian rhythm is a roughly 24-hour cycle that determines ... another way to help reset your body's internal clock. Moving up daily routines, like dinner time or when you exercise, also ...