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They’re finally putting social media to good use — and it’s about time

Ticking the day away on apps like X has recently become somewhat of an educational activity as fans of the platform are just now learning the significance of “a.m.” and “p.m.”

“I might be called stupid after this, but WTF does ‘AM’ and ‘PM’ stand for?” asked X user @IAMTOINEJ in a tweet that’s garnered over 21 million views. 


  Social media users were baffled by the true meaning of ‘a.m.’ and ‘p.m.’ Creativa Images – stock.adobe.com Social media users were baffled by the true meaning of ‘a.m.’ and ‘p.m.’ Creativa Images – stock.adobe.com

  Social media users on X were mind-blown after learning the true meaning behind the “a.m.” and “p.m.” abbreviations.
 Social media users on X were mind-blown after learning the true meaning behind the “a.m.” and “p.m.” abbreviations.

It’s a query he took to the platform — formerly known as Twitter — amid the buzzy Gen Z trend toward gathering information from social media sites rather than search engines like Google. 

And much to the clueless guy’s surprise, most folks online who replied, too, had no clue what the shorthand means. 

“After midnight and past midnight,” guessed a baffled commenter. 

“Ahh (it’s) Morning” & “Period (it’s) Midnight,” another teased.  

“I’ve never in my life thought to ask this question,” admitted an equally puzzled spectator. 


  Confused online commenters took wacky guesses at what the letters might mean. Krakenimages.com – stock.adobe.com Confused online commenters took wacky guesses at what the letters might mean. Krakenimages.com – stock.adobe.com

Well, here’s the answer in plain English — the abbreviations are rooted in Latin. 

Both a.m. and p.m. stands for the Latin phrases “ante meridiem,” which means before midday, and “post meridiem,” meaning after midday. 

In countries such as the US and Canada, each day is divided into two 12-hour periods, during which a.m. refers to the hours between midnight and noon and p.m. covers the hours from noon to midnight.


  Pro at TimeandDate.com explained the significance behind each abbreviation, and how they individually mark the time periods within a 24-hour day. Karl Rosencrants – stock.adobe.com Pro at TimeandDate.com explained the significance behind each abbreviation, and how they individually mark the time periods within a 24-hour day. Karl Rosencrants – stock.adobe.com

“The main weakness of the 12-hour system is a widespread confusion about which abbreviation should be used for noon and midnight,” say the experts, “neither moment can logically be identified as before noon (a.m.) or after noon (p.m.).”

But a.m. and p.m. aren’t the only time-related elisions that have left digital dopes stumped. 

The “o” in “o’clock” has also sent cyberspace spiraling

“What’s the meaning of ‘O’ in o’clock???,” asked Threads user and fashion designer @Jenny_Nuel1 in August. 


  Online users were previously stunned to learn what the “o” in “o’clock” stands for with regard to time. opolja – stock.adobe.com Online users were previously stunned to learn what the “o” in “o’clock” stands for with regard to time. opolja – stock.adobe.com

Other wild guessers suggested that the letter stood for “zero,” “oida” (“old person” in Viennese), “Omega” and more.

But its true meaning isn’t all that jazzy. 

The “o” simply stands for “of the,” according to the Britannica Dictionary, which says “an apostrophe is used in o’clock because the word is a contraction of the phrase ‘of the clock.’”

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