Articles About Clocks (4)
How Does an Atomic Clock Work?
Atomic clocks are among the most accurate timekeepers in human history. Just how precise are they and how do they work?
AM and PM Explained
How does the 12-hour clock system work? Is midnight 12 am or 12 pm?
What Are Leap Seconds?
Every now and then a leap second is added to Coordinated Universal Time (UTC) in order to synchronize clocks worldwide with the Earth's ever-slowing rotation.
How Leap Seconds Work
Leap seconds have been added to clocks worldwide since 1972. Why are they needed and why the Earth is slowing down?