---
title: "why are the abbreviations am. & pm. used for?"  
description: "why are the abbreviations am. & pm. used for?"  
author: "Vedika Deshmukh"  
published: 2017-11-25  
canonical: https://answers.mindstick.com/qa/31203/why-are-the-abbreviations-am-pm-used-for  
category: "general knowledge"  
reading_time: 1 minute  

---

# why are the abbreviations am. & pm. used for?

## Answers

### Answer by akriti kashyap

## Clock Facts!

![why are the abbreviations am. & pm. used for?](https://answers.mindstick.com/questionanswer/c0cf5f8a-979f-4658-b78c-557f90669232/images/b88016c9-1881-4e69-9cab-e23f5f57df90.png)**\**

The convention for the time is 12-hour clock in 24 hours. Hence, the entire day is been divided into 2 halves thus, known as Ante Meridian or (A.M.) and Post Meridian or (P.M.).

As mentioned above that each of the halves consists of 12-hours clock thus, the number is been used from 1 to 12 for the time convention. \
Ante Meridian thus start from 12 midnight and stays up to 12 noon whereas Post Meridian begins at 12 noon and stay up till 12 midnight. ![why are the abbreviations am. & pm. used for?](https://answers.mindstick.com/questionanswer/c0cf5f8a-979f-4658-b78c-557f90669232/images/87661973-f4bd-4fef-9eff-5e7ada761ed9.png)\
It was developed in the 16th BC century. \
Thus, a beautiful saying...**"Time and Tide wait for none!"*****\******Cheers to time!***\


---

Original Source: https://answers.mindstick.com/qa/31203/why-are-the-abbreviations-am-pm-used-for

Copyright © MindStick Software Pvt. Ltd. This Markdown version is provided for developers, AI systems, and offline reading.