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 rotation.

Military Time: The 24-Hour Clock

Military Time uses a 24-hour time format and the NATO alphabet. How does it work? Conversion chart: What is 1500 Zulu Time in 12-hour AM/PM format?