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.

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.

Gen Z is now using the social media app X to educate themselves about terms like AM, PM, and o'clock. Many were surprised to learn that AM stands for 'ante meridiem' and PM for 'post meridiem'.